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diff --git a/iap21.md b/iap21.md
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--- a/iap21.md
+++ b/iap21.md
@@ -89,6 +89,7 @@
 
 - [[quote]] [[inception]]: knitting the lacework - [[connecting sources]], [[queries, and outputs]]
   - Working with [[public knowledge graphs]], building new [[visualizations]] + [[overlays]]
+- [[agnes cameron]] presented an example of [[underlay, interlay, overlay]] reasoning in the field of [[food sustainability]].
 
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
@@ -112,6 +113,7 @@
 [open]: open "Open"
 [open source]: open-source "Open Source"
 [wednesday]: wednesday "Wednesday"
+[units of collaboration]: units-of-collaboration "Units of Collaboration"
 [audiences]: audiences "Audiences"
 [cyberfeminist index]: cyberfeminist-index "Cyberfeminist Index"
 [quotebacks]: quotebacks "Quotebacks"