diff --git a/src/main/java/io/reactivex/Flowable.java b/src/main/java/io/reactivex/Flowable.java
index 2f30236606..8570a5782b 100644
--- a/src/main/java/io/reactivex/Flowable.java
+++ b/src/main/java/io/reactivex/Flowable.java
@@ -8163,7 +8163,7 @@ public final Flowable<T> filter(Predicate<? super T> predicate) {
      * Returns a Maybe that emits only the very first item emitted by this Flowable or
      * completes if this Flowable is empty.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/first.png" alt="">
+     * <img width="640" height="237" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/firstElement.m.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream and consumes the source {@code Publisher} in an
@@ -8186,7 +8186,7 @@ public final Maybe<T> firstElement() {
      * Returns a Single that emits only the very first item emitted by this Flowable, or a default
      * item if this Flowable completes without emitting anything.
      * <p>
-     * <img width="640" height="305" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/firstOrDefault.png" alt="">
+     * <img width="640" height="305" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/first.s.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream and consumes the source {@code Publisher} in an
@@ -8772,7 +8772,7 @@ public final Completable flatMapCompletable(Function<? super T, ? extends Comple
      * Returns a Flowable that merges each item emitted by the source Publisher with the values in an
      * Iterable corresponding to that item that is generated by a selector.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flatMapIterable.f.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream. The source {@code Publisher}s is
@@ -8802,7 +8802,7 @@ public final <U> Flowable<U> flatMapIterable(final Function<? super T, ? extends
      * Returns a Flowable that merges each item emitted by the source Publisher with the values in an
      * Iterable corresponding to that item that is generated by a selector.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flatMapIterable.f.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream. The source {@code Publisher}s is
@@ -8836,7 +8836,7 @@ public final <U> Flowable<U> flatMapIterable(final Function<? super T, ? extends
      * Returns a Flowable that emits the results of applying a function to the pair of values from the source
      * Publisher and an Iterable corresponding to that item that is generated by a selector.
      * <p>
-     * <img width="640" height="390" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.r.png" alt="">
+     * <img width="640" height="410" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flatMapIterable.f.r.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream and the source {@code Publisher}s is
@@ -8874,7 +8874,7 @@ public final <U, V> Flowable<V> flatMapIterable(final Function<? super T, ? exte
      * Iterable corresponding to that item that is generated by a selector, while limiting the number of concurrent
      * subscriptions to these Publishers.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="410" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flatMapIterable.f.r.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream. The source {@code Publisher}s is
diff --git a/src/main/java/io/reactivex/Maybe.java b/src/main/java/io/reactivex/Maybe.java
index 779fb79ae9..c2b8826ec2 100644
--- a/src/main/java/io/reactivex/Maybe.java
+++ b/src/main/java/io/reactivex/Maybe.java
@@ -2696,7 +2696,7 @@ public final <U, R> Maybe<R> flatMap(Function<? super T, ? extends MaybeSource<?
      * Returns a Flowable that merges each item emitted by the source Maybe with the values in an
      * Iterable corresponding to that item that is generated by a selector.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="373" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flattenAsFlowable.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream.</dd>
@@ -2723,7 +2723,7 @@ public final <U> Flowable<U> flattenAsFlowable(final Function<? super T, ? exten
     /**
      * Returns an Observable that maps a success value into an Iterable and emits its items.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="373" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flattenAsObservable.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code flattenAsObservable} does not operate by default on a particular {@link Scheduler}.</dd>
diff --git a/src/main/java/io/reactivex/Observable.java b/src/main/java/io/reactivex/Observable.java
index 2d1e36dd54..0b771ae4c2 100644
--- a/src/main/java/io/reactivex/Observable.java
+++ b/src/main/java/io/reactivex/Observable.java
@@ -7242,7 +7242,7 @@ public final Observable<T> filter(Predicate<? super T> predicate) {
      * Returns a Maybe that emits only the very first item emitted by the source ObservableSource, or
      * completes if the source ObservableSource is empty.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/firstElement.png" alt="">
+     * <img width="640" height="237" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/firstElement.m.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code firstElement} does not operate by default on a particular {@link Scheduler}.</dd>
@@ -7261,7 +7261,7 @@ public final Maybe<T> firstElement() {
      * Returns a Single that emits only the very first item emitted by the source ObservableSource, or a default item
      * if the source ObservableSource completes without emitting any items.
      * <p>
-     * <img width="640" height="305" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/first.2.png" alt="">
+     * <img width="640" height="286" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/first.s.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code first} does not operate by default on a particular {@link Scheduler}.</dd>
@@ -7753,7 +7753,7 @@ public final Completable flatMapCompletable(Function<? super T, ? extends Comple
      * Returns an Observable that merges each item emitted by the source ObservableSource with the values in an
      * Iterable corresponding to that item that is generated by a selector.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flatMapIterable.o.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code flatMapIterable} does not operate by default on a particular {@link Scheduler}.</dd>
@@ -7779,7 +7779,7 @@ public final <U> Observable<U> flatMapIterable(final Function<? super T, ? exten
      * Returns an Observable that emits the results of applying a function to the pair of values from the source
      * ObservableSource and an Iterable corresponding to that item that is generated by a selector.
      * <p>
-     * <img width="640" height="390" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.r.png" alt="">
+     * <img width="640" height="390" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flatMapIterable.o.r.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code flatMapIterable} does not operate by default on a particular {@link Scheduler}.</dd>
diff --git a/src/main/java/io/reactivex/Single.java b/src/main/java/io/reactivex/Single.java
index d0e65336e2..51081bb44e 100644
--- a/src/main/java/io/reactivex/Single.java
+++ b/src/main/java/io/reactivex/Single.java
@@ -2045,7 +2045,7 @@ public final <R> Flowable<R> flatMapPublisher(Function<? super T, ? extends Publ
      * Returns a Flowable that merges each item emitted by the source Single with the values in an
      * Iterable corresponding to that item that is generated by a selector.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="373" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flattenAsFlowable.png" alt="">
      * <dl>
      *  <dt><b>Backpressure:</b></dt>
      *  <dd>The operator honors backpressure from downstream.</dd>
@@ -2072,7 +2072,7 @@ public final <U> Flowable<U> flattenAsFlowable(final Function<? super T, ? exten
     /**
      * Returns an Observable that maps a success value into an Iterable and emits its items.
      * <p>
-     * <img width="640" height="310" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/mergeMapIterable.png" alt="">
+     * <img width="640" height="373" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/flattenAsObservable.png" alt="">
      * <dl>
      *  <dt><b>Scheduler:</b></dt>
      *  <dd>{@code flattenAsObservable} does not operate by default on a particular {@link Scheduler}.</dd>
diff --git a/src/main/java/io/reactivex/processors/UnicastProcessor.java b/src/main/java/io/reactivex/processors/UnicastProcessor.java
index ecd624da8c..88f2e9cbed 100644
--- a/src/main/java/io/reactivex/processors/UnicastProcessor.java
+++ b/src/main/java/io/reactivex/processors/UnicastProcessor.java
@@ -37,6 +37,8 @@
  * will receive an IllegalStateException if this Processor hasn't terminated yet,
  * or the Subscribers receive the terminal event (error or completion) if this
  * Processor has terminated.
+ * <p>
+ * <img width="640" height="370" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/UnicastProcessor.png" alt="">
  *
  * @param <T> the value type received and emitted by this Processor subclass
  * @since 2.0
diff --git a/src/main/java/io/reactivex/subjects/UnicastSubject.java b/src/main/java/io/reactivex/subjects/UnicastSubject.java
index b5054d52ba..4a1b8815e9 100644
--- a/src/main/java/io/reactivex/subjects/UnicastSubject.java
+++ b/src/main/java/io/reactivex/subjects/UnicastSubject.java
@@ -37,6 +37,8 @@
  * will receive an IllegalStateException if this Subject hasn't terminated yet,
  * or the Subscribers receive the terminal event (error or completion) if this
  * Subject has terminated.
+ * <p>
+ * <img width="640" height="370" src="https://raw.github.com/wiki/ReactiveX/RxJava/images/rx-operators/UnicastSubject.png" alt="">
  *
  * @param <T> the value type received and emitted by this Subject subclass
  * @since 2.0