Maybe search for EPD files instead, which can be converted to PGN if absolutely necessary.
Miniatures PGN?

This file is an Extract from the
http://www.chess.com/download/view/chess-puzzles-mate-in-2-pgn---135113
Download, it is largely files from the Robert Lincoln filter; I have visually checked each game in the file on SCID and while I cannot promise there are zero errors; I believe each problem in the file is a Miniture.
The Solutions have been striped from each problem. You'll find Droidfish has no problem finding them if you find yourself stumped. Alot of these games seem to come from More fun with Chess Minitures and I suggest you check out that book.
Thanks BB.
http://www.chess.com/download/view/500-miniture-chess-problems
I've searched the web pretty extensively, but cant find what I'm looking for; a pgn download of all Miniature Chess Problems. Mates in 2 or 3 prefered. If anyone knows of a collection and would be willing to share the URL it would be appreciated. TY
TY