diff --git a/1987/heckbert/.entry.json b/1987/heckbert/.entry.json
index 88c40ca15..14cc51d08 100644
--- a/1987/heckbert/.entry.json
+++ b/1987/heckbert/.entry.json
@@ -41,6 +41,14 @@
 	    "display_via_github" : true,
 	    "entry_text" : "script to try entry"
 	},
+	{
+	    "file_path" : "FoldSpindleMutilate.pdf",
+	    "inventory_order" : 125,
+	    "OK_to_edit" : false,
+	    "display_as" : "pdf",
+	    "display_via_github" : false,
+	    "entry_text" : "cultural history of the punch card"
+	},
 	{
 	    "file_path" : "1987_heckbert.tar.bz2",
 	    "inventory_order" : 1415926535,
diff --git a/1987/heckbert/FoldSpindleMutilate.pdf b/1987/heckbert/FoldSpindleMutilate.pdf
new file mode 100644
index 000000000..b30fa3b94
Binary files /dev/null and b/1987/heckbert/FoldSpindleMutilate.pdf differ
diff --git a/1987/heckbert/README.md b/1987/heckbert/README.md
index 78efd8a2d..5ac52890c 100644
--- a/1987/heckbert/README.md
+++ b/1987/heckbert/README.md
@@ -33,11 +33,11 @@ Folding at the wrong length may be equivalent to a "Spindle or Mutilate" operati
 ```
 
 Try not to
-[Fold, Spindle or Mutilate](https://repository.library.brown.edu/studio/item/bdr:788264/PDF/)
+[Fold, Spindle or Mutilate](FoldSpindleMutilate.pdf)
 files. :-)
 
 The judges used this program to fold up very long lines which the
-BSD fold(1) was unable to process. This program has been added to
+BSD `fold(1)` was unable to process. This program has been added to
 the contest tool chest.
 
 
diff --git a/1987/heckbert/index.html b/1987/heckbert/index.html
index d3e2b754f..e6a019a28 100644
--- a/1987/heckbert/index.html
+++ b/1987/heckbert/index.html
@@ -414,10 +414,10 @@ To compile on a 16 bit machine, change 300000 to 30000.</p>
 <p>Folding at the wrong length may be equivalent to a “Spindle or Mutilate” operation. For example:</p>
 <pre><code>    ./heckbert 40 &lt; heckbert.c &gt; ph.c ; make ph ; ./ph 20 &lt; heckbert.c &gt; bar.c ; make bar</code></pre>
 <p>Try not to
-<a href="https://repository.library.brown.edu/studio/item/bdr:788264/PDF/">Fold, Spindle or Mutilate</a>
+<a href="FoldSpindleMutilate.pdf">Fold, Spindle or Mutilate</a>
 files. :-)</p>
 <p>The judges used this program to fold up very long lines which the
-BSD fold(1) was unable to process. This program has been added to
+BSD <code>fold(1)</code> was unable to process. This program has been added to
 the contest tool chest.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>No remarks were provided by the author.</p>
@@ -450,6 +450,7 @@ the contest tool chest.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1987/heckbert/Makefile">Makefile</a> - entry Makefile</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1987/heckbert/heckbert.orig.c">heckbert.orig.c</a> - original source code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1987/heckbert/try.sh">try.sh</a> - script to try entry</li>
+<li><a href="FoldSpindleMutilate.pdf">FoldSpindleMutilate.pdf</a> - cultural history of the punch card</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>
diff --git a/tmp/manifest.csv b/tmp/manifest.csv
index e573990c7..54eb8610e 100644
--- a/tmp/manifest.csv
+++ b/tmp/manifest.csv
@@ -199,6 +199,7 @@
 1987,heckbert,Makefile,30,true,makefile,true,entry Makefile
 1987,heckbert,heckbert.orig.c,50,false,c,true,original source code
 1987,heckbert,try.sh,100,true,shellscript,true,script to try entry
+1987,heckbert,FoldSpindleMutilate.pdf,125,false,pdf,false,cultural history of the punch card
 1987,heckbert,1987_heckbert.tar.bz2,1415926535,false,tbz2,false,download entry tarball
 1987,heckbert,README.md,4000000000,true,markdown,true,markdown source for this web page
 1987,heckbert,.entry.json,4000000000,true,json,true,entry summary and manifest in JSON
diff --git a/tmp/manifest.numbers b/tmp/manifest.numbers
index 44301aadb..b69ef940f 100644
Binary files a/tmp/manifest.numbers and b/tmp/manifest.numbers differ
diff --git a/tmp/path_list.built.txt b/tmp/path_list.built.txt
index cf3a94271..53bab78aa 100644
--- a/tmp/path_list.built.txt
+++ b/tmp/path_list.built.txt
@@ -73,6 +73,7 @@
 1987/biggar/index.html
 1987/heckbert/.path
 1987/heckbert/1987_heckbert.tar.bz2
+1987/heckbert/FoldSpindleMutilate.pdf
 1987/heckbert/heckbert.orig.c
 1987/heckbert/index.html
 1987/hines/.path
diff --git a/tmp/path_list.found.txt b/tmp/path_list.found.txt
index 4168dfcb4..d1fa8d4ea 100644
--- a/tmp/path_list.found.txt
+++ b/tmp/path_list.found.txt
@@ -198,6 +198,7 @@
 1987/heckbert/.gitignore
 1987/heckbert/.path
 1987/heckbert/1987_heckbert.tar.bz2
+1987/heckbert/FoldSpindleMutilate.pdf
 1987/heckbert/Makefile
 1987/heckbert/README.md
 1987/heckbert/heckbert.c
diff --git a/tmp/path_list.manifest.txt b/tmp/path_list.manifest.txt
index 4168dfcb4..d1fa8d4ea 100644
--- a/tmp/path_list.manifest.txt
+++ b/tmp/path_list.manifest.txt
@@ -198,6 +198,7 @@
 1987/heckbert/.gitignore
 1987/heckbert/.path
 1987/heckbert/1987_heckbert.tar.bz2
+1987/heckbert/FoldSpindleMutilate.pdf
 1987/heckbert/Makefile
 1987/heckbert/README.md
 1987/heckbert/heckbert.c