diff --git a/README.md b/README.md
index 9f06828..ff97586 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ Although the C++ tool itself is open source with a permissive license (Apache 2.
 * Richard Geldreich, Jr. - Copyright (c) 2023. Commercial usage permitted as long as attribution is given.
 * NICAP - Unknown copyright status. The organization went defunct in 1980, 43 years ago, so it's very likely this data is in the Public Domain.
 * \*U\* binary database file U.RND: Copyright 1994-2002 [Larry Hatch](https://www.openminds.tv/larry-hatch-ufo-database-creator-remembered/42142). According to David Marler, Executive Director of the [National UFO Historical Records Center](http://www.nufohrc.org/), "The family has verbally given permission for the database to be used. If you need to speak with them, I have their contact info."
-* The [Anonymous PDF](https://github.com/richgel999/ufo_data/blob/main/bin/anon_pdf.md), which appeared on the internet [here](https://pdfhost.io/v/gR8lAdgVd_Uap_Timeline_Prepared_By_Another) in late July, 2023, is not copyrighted and is in the Public Domain (i.e. it is not Intellectual Property). All ~600 events were explictly and individually marked "PUBLIC DOMAIN" in the original PDF document. In any jurisdictions outside the US that don't recognize Public Domain, it's uses the [Unlicense](https://web.archive.org/web/20230426084039/https://unlicense.org/). Please see this website for details.
+* The [Anonymous PDF](https://github.com/richgel999/ufo_data/blob/main/bin/anon_pdf.md) Markdown file (anon_pdf.md), which originally appeared on the internet [here](https://pdfhost.io/v/gR8lAdgVd_Uap_Timeline_Prepared_By_Another) in late July 2023 in Adobe PDF format, is not copyrighted and is in the Public Domain (i.e. it is not Intellectual Property). All ~600 events were explictly and individually marked "PUBLIC DOMAIN" in the original PDF format document. In any jurisdictions outside the US that don't recognize the Public Domain, this Markdown file (and ONLY the specific file anon_pdf.md) uses the [Unlicense](https://web.archive.org/web/20230426084039/https://unlicense.org/).
 
 ## Instructions