diff --git a/README.md b/README.md
index 6498f15..11351f6 100644
--- a/README.md
+++ b/README.md
@@ -296,6 +296,9 @@ https://www.nytimes.com/2019/05/26/us/politics/ufo-sightings-navy-pilots.html
 
 _Useful/educational material. Not sorted/categorized yet._
 
+- "In Plain Sight: An investigation into UFOs and impossible science" by Ross Coulthart<br>
+https://www.amazon.com/Plain-Sight-investigation-impossible-science-ebook/dp/B08VYR4DZ6
+
 - "Is UAP Dissemination actually coming?! EX CIA officer says yes- DNI and NASA Directors on board?": - 11/12/21<br>
 https://www.youtube.com/watch?v=8DSTpEYYBrc