diff --git a/docs/_data/groupphotos.yml b/docs/_data/groupphotos.yml
index 5d53cd7..5aa402e 100644
--- a/docs/_data/groupphotos.yml
+++ b/docs/_data/groupphotos.yml
@@ -1,7 +1,3 @@
-- src: COMSOC_2008_1.jpg
-  title: The Second COMSOC Workshop in Liverpool (2008)
-  url: archive/comsoc-2008/
-
 - src: COMSOC_2008_2.jpg
   title: The Second COMSOC Workshop in Liverpool (2008)
   url: archive/comsoc-2008/
@@ -19,16 +15,16 @@
   url: https://tzin.bgu.ac.il/~omerlev/comsoc.html
 
 - src: COMSOC_Summer_School_2010.jpg
-  title: COST-ADT Doctoral School on Computational Social Choice in Estoril (2010)
+  title: Doctoral School on Computational Social Choice in Estoril (2010)
   url: archive/estoril-2010/
 
 - src: COMSOC_Summer_School_2014.jpg
-  title: Summer School on the interdisciplinary Analysis of Voting Rules in Can (2014)
-  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Summer-Schools/Caen-2014/index.html
+  title: Summer School on the interdisciplinary Analysis of Voting Rules in Caen (2014)
+  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Summer-Schools/Caen-2014/
 
 - src: COMSOC_Summer_School_2016.jpg
   title: Summer School on Computational Social Choice in San Sebastián (2016)
-  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Summer-Schools/San-Sebastian-2016/index.html
+  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Summer-Schools/San-Sebastian-2016/
 
 - src: COMSOC_Summer_School_2023.jpg
   title: Summer School on Computational Social Choice in Amsterdam (2023)
@@ -36,46 +32,42 @@
 
 - src: COST_Action_Meetup_2013.jpg
   title: Meeting of the COST Action on Computational Social Choice in Oxford (2013)
-  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Meetings/Oxford-2013/index.html
+  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Meetings/Oxford-2013/
 
 - src: COST_Action_Meetup_2014.jpg
   title: Meeting of the COST Action on Computational Social Choice in Sibiu (2014)
-  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Meetings/Sibiu-2014/index.html
+  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Meetings/Sibiu-2014/
 
 - src: COST_Action_Meetup_2015_Glasgow.jpg
   title: Meeting of the COST Action on Computational Social Choice in Glasgow (2015)
-  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Meetings/Glasgow-2015/index.html
-
-- src: COST_Action_Meetup_2015_Istanbul.jpg
-  title: Meeting of the COST Action on Computational Social Choice in Istanbul (2015)
-  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Meetings/Istanbul-2015/index.html
+  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Meetings/Glasgow-2015/
 
 - src: Dagstuhl_2007.jpg
-  title: Dagstuhl Seminar Computational Issues in Social Choice
+  title: Dagstuhl Seminar on Computational Issues in Social Choice (2007)
   url: https://www.dagstuhl.de/en/seminars/seminar-calendar/seminar-details/07431
 
 - src: Dagstuhl_2010.jpg
-  title: Dagstuhl Seminar Computational Foundations of Social Choice
+  title: Dagstuhl Seminar on Computational Foundations of Social Choice (2010)
   url: https://www.dagstuhl.de/en/seminars/seminar-calendar/seminar-details/10101
 
 - src: Dagstuhl_2012.jpg
-  title: Dagstuhl Seminar Computation and Incentives in Social Choice
+  title: Dagstuhl Seminar on Computation and Incentives in Social Choice (2012)
   url: https://www.dagstuhl.de/en/seminars/seminar-calendar/seminar-details/12101
 
 - src: Dagstuhl_2015.jpg
-  title: "Dagstuhl Seminar Computational Social Choice: Theory and Applications"
+  title: "Dagstuhl Seminar on Computational Social Choice: Theory and Applications (2015)"
   url: https://www.dagstuhl.de/seminars/seminar-calendar/seminar-details/15241
 
 - src: Dagstuhl_2017.jpg
-  title: "Dagstuhl Seminar Voting: Beyond Simple Majorities and Single-Winner Elections"
+  title: "Dagstuhl Seminar on Voting: Beyond Simple Majorities and Single-Winner Elections (2017)"
   url: https://www.dagstuhl.de/seminars/seminar-calendar/seminar-details/17261
 
 - src: Dagstuhl_2019.jpg
-  title: Dagstuhl Seminar Application-Oriented Computational Social Choice
+  title: Dagstuhl Seminar on Application-Oriented Computational Social Choice (2019)
   url: https://www.dagstuhl.de/seminars/seminar-calendar/seminar-details/19381
 
 - src: Dagstuhl_2022.jpg
-  title: Dagstuhl Seminar Algorithms for Participatory Democracy
+  title: Dagstuhl Seminar on Algorithms for Participatory Democracy (2022)
   url: https://www.dagstuhl.de/seminars/seminar-calendar/seminar-details/22271
 
 - src: Fair_Division_Summer_School_2015.jpg
@@ -84,4 +76,4 @@
 
 - src: Matching_Summer_School_2013.jpg
   title: Summer School on Matching Problems, Markets, and Mechanisms in Budapest (2013)
-  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Summer-Schools/Budapest-2013/index.html
\ No newline at end of file
+  url: https://archive.illc.uva.nl/COST-IC1205/Events/Action-Summer-Schools/Budapest-2013/index.html