Here are some free Endgame studies and secrets from the Huntsville Chess Club.
There are a couple dozen studies and secrets of "King and Pawn" and "Knight" endgames.
Here is another page of recent games from top players and the different Endgames that resulted.
Here is a monster list of Chess Endgame Studies at the Chess Cafe in pdf format. There is also a link on the page to the first 195 studies in text format for download.
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