diff --git a/web/index.html b/web/index.html
index 6b2ccad..b3d72ba 100644
--- a/web/index.html
+++ b/web/index.html
@@ -27,13 +27,12 @@ <h2>Supporting Information</h2>
 <h2>What is a Shapefile?</h2>
 
 If you don't know, you probably don't need this library.  The Shapefile
-format is a working and interchange format promulagated by
+format is a working and interchange format promulgated by
 <a href="http://www.esri.com/">ESRI</a> for simple vector data with attributes.
 <p>
 
-An excellent <a href="dl/shapefile.pdf">white paper</a> on the shapefile format
-is available from ESRI,
-but it is .pdf format, so you will need Adobe Acrobat to browse it.<p>
+An excellent <a href="https://www.esri.com/content/dam/esrisites/sitecore-archive/Files/Pdfs/library/whitepapers/pdfs/shapefile.pdf">white paper</a>
+on the shapefile format is available from ESRI.<p>
 
 The file format actually consists of three files.<p>
 
@@ -177,7 +176,7 @@ <h2>Other Shapefile Resources</h2>
 
 <li> David Gancarz has implemented a Microsoft
 <a href="dl/contrib/DotNetArchive.zip">.NET wrapper</a> for
-Shapelib.   An example of using shapelib with VB6 is also icluded in the .NET wrapper project file.<p>
+Shapelib.   An example of using shapelib with VB6 is also included in the .NET wrapper project file.<p>
 
 <li> Andrey Hristov (php at hristov dot com) has developed a PHP extension
 based on Shapelib.  It can be found in CVS at http://cvs.php.net/pecl/shp.<p>