diff --git a/docs/_data/schedule.yaml b/docs/_data/schedule.yaml
index fdd8c2b7..a1330e5e 100644
--- a/docs/_data/schedule.yaml
+++ b/docs/_data/schedule.yaml
@@ -1321,8 +1321,8 @@
     name: ''
     numDays: 0 
   lecture:
-    link: ''
-    name: 'Ethical Companies and Course Recap'
+    link: https://github.com/CMU-17-356/cmu-17-356.github.io/raw/main/resources/slides/2023/Lecture24-EthicalBusiness-Recap-wide.pdf
+    name: Ethical Companies and Course Recap
   reading:
     link: ''
     name: ''
@@ -1412,7 +1412,7 @@
     numDays: 0
   lecture:
     link: ''
-    name: 'Final Presentations'
+    name: 'Final Presentations [Posner A35]'
   reading:
     link: ''
     name: ''
diff --git a/docs/_data/this_week.yaml b/docs/_data/this_week.yaml
index 05533548..334c5147 100644
--- a/docs/_data/this_week.yaml
+++ b/docs/_data/this_week.yaml
@@ -10,7 +10,7 @@ lectures:
   link: https://github.com/CMU-17-356/cmu-17-356.github.io/raw/main/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-wide.pdf
   name: 'Startup Economics: Pitch Perfect'
 - date: Thu Apr 27
-  link: ''
+  link: https://github.com/CMU-17-356/cmu-17-356.github.io/raw/main/resources/slides/2023/Lecture24-EthicalBusiness-Recap-wide.pdf
   name: Ethical Companies and Course Recap
 
 next_homework: null
diff --git a/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-Retcon-wide.pdf b/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-Retcon-wide.pdf
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diff --git a/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-wide.pdf b/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-wide.pdf
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diff --git a/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-wide.pptx b/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-wide.pptx
new file mode 100644
index 00000000..7393d1c8
--- /dev/null
+++ b/resources/slides/2023/Lecture23-StartupEconomics-PitchPerfect-wide.pptx
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b1152d5ffc66658a6caba5e43b117c01191c736f50425bf0e6e03581b6242b8c
+size 18860081
diff --git a/resources/slides/2023/Lecture24-EthicalBusiness-Recap-wide.pdf b/resources/slides/2023/Lecture24-EthicalBusiness-Recap-wide.pdf
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