diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -284,10 +284,6 @@
     'rsrc/image/divot.png' => '0fbe2453',
     'rsrc/image/examples/hero.png' => '5d8c4b21',
     'rsrc/image/grippy_texture.png' => 'a7d222b5',
-    'rsrc/image/icon/fatcow/arrow_branch.png' => '98149d9f',
-    'rsrc/image/icon/fatcow/arrow_merge.png' => 'e142f4f8',
-    'rsrc/image/icon/fatcow/calendar_edit.png' => '5ff44a08',
-    'rsrc/image/icon/fatcow/document_black.png' => 'd3515fa5',
     'rsrc/image/icon/fatcow/flag_blue.png' => '54db2e5c',
     'rsrc/image/icon/fatcow/flag_finish.png' => '2953a51b',
     'rsrc/image/icon/fatcow/flag_ghost.png' => '7d9ada92',
@@ -298,15 +294,6 @@
     'rsrc/image/icon/fatcow/flag_red.png' => '9e6d8817',
     'rsrc/image/icon/fatcow/flag_yellow.png' => '906733f4',
     'rsrc/image/icon/fatcow/key_question.png' => 'c10c26db',
-    'rsrc/image/icon/fatcow/link.png' => '8edbf327',
-    'rsrc/image/icon/fatcow/page_white_edit.png' => '17ef5625',
-    'rsrc/image/icon/fatcow/page_white_put.png' => '82430c91',
-    'rsrc/image/icon/fatcow/source/conduit.png' => '5b55130c',
-    'rsrc/image/icon/fatcow/source/email.png' => '8a32b77f',
-    'rsrc/image/icon/fatcow/source/fax.png' => '8bc2a49b',
-    'rsrc/image/icon/fatcow/source/mobile.png' => '0a918412',
-    'rsrc/image/icon/fatcow/source/tablet.png' => 'fc50b050',
-    'rsrc/image/icon/fatcow/source/web.png' => '70433af3',
     'rsrc/image/icon/subscribe.png' => '07ef454e',
     'rsrc/image/icon/tango/attachment.png' => 'bac9032d',
     'rsrc/image/icon/tango/edit.png' => 'e6296206',
diff --git a/webroot/rsrc/image/icon/fatcow/README b/webroot/rsrc/image/icon/fatcow/README
--- a/webroot/rsrc/image/icon/fatcow/README
+++ b/webroot/rsrc/image/icon/fatcow/README
@@ -11,9 +11,3 @@
 Some icons have been adapted from the FatCow set for use in Phabricator:
 
   key_question.png      (from key_*.png)
-  source/web.png        (from world.png)
-  source/email.png      (from email.png)
-  source/conduit.png    (from satellite_dish.png)
-  source/mobile.png     (from phone.png)
-  source/tablet.png     (from tablet.png)
-  source/fax.png        (from fax.png)
diff --git a/webroot/rsrc/image/icon/fatcow/arrow_branch.png b/webroot/rsrc/image/icon/fatcow/arrow_branch.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/arrow_merge.png b/webroot/rsrc/image/icon/fatcow/arrow_merge.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/calendar_edit.png b/webroot/rsrc/image/icon/fatcow/calendar_edit.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/document_black.png b/webroot/rsrc/image/icon/fatcow/document_black.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/link.png b/webroot/rsrc/image/icon/fatcow/link.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/page_white_edit.png b/webroot/rsrc/image/icon/fatcow/page_white_edit.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/page_white_put.png b/webroot/rsrc/image/icon/fatcow/page_white_put.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/source/conduit.png b/webroot/rsrc/image/icon/fatcow/source/conduit.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/source/email.png b/webroot/rsrc/image/icon/fatcow/source/email.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/source/fax.png b/webroot/rsrc/image/icon/fatcow/source/fax.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/source/mobile.png b/webroot/rsrc/image/icon/fatcow/source/mobile.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/source/tablet.png b/webroot/rsrc/image/icon/fatcow/source/tablet.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/webroot/rsrc/image/icon/fatcow/source/web.png b/webroot/rsrc/image/icon/fatcow/source/web.png
deleted file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001