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If you need more evidence Jeffrey Epstein was one sick pup ... then look no further than his 50th birthday book — which features drawings of his favorite subject — underage girls!

Congress, as you know, obtained a copy of ol' Jeffrey's Bday book and released it publicly Monday, showing artwork from an unidentified artist (or pervert!) that will surely gross some people out.

One drawing depicts a man handing multi-colored balloons to a group of pig-tailed girls with "1983" scribbled at the bottom. It's not exactly clear if the guy is Epstein because he has a full head of dark hair instead of his famous salt and pepper look. However, Epstein was just 30 in 1983, so he probably wasn't graying much yet.

Another caricature shows a naked man — likely Epstein — lying on hi

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