Massive FBI trove on Yippies released under FOIA

yippiesb.jpg Government Attic received, following a Freedom of Information Act request, 6,600 pages of FBI reports into the Youth International Party, or Yippies, famed for combining radical politics with humor. It's an epic mountain of material; I love the group's hand-drawn flyers and FBI bulletins such as this one.
5/9/68 PLAINTEXT TELETYPE / DEFERRED YOUTH INTERNATIONAL PARTY (YIP), AKA. YIPPIES. IS-MISC. 00 NEW YORK. RELIABLE SOURCE ADVISED TODAY GROUP OF HIPPIES FROM CHICAGO AREA ATTEMPTING TO ORGANIZE YIP CHAPTER CHICAGO HOLDING "HAPPENING" MAY TWELVE NEXT. INTERESTED HIPPIES TO MEET AT NORTH AVENUE BEACH, NEAR NORTH SIDE, FOR "LOVE IN" AND "KITE FLY". WHEN LEADERS FEEL SIZEABLE GROUP HAS GATHERED, THEY WILL THEN MARCH TO CHICAGO AVENUE POLICE STATION, ONE ONE THREE WEST CHICAGO AVENUE, CHICAGO, ILL. AND PRESENT APPLE PIES TO CHICAGO POLICE OFFICERS REQUIRED TO WORK ON MOTHERS DAY. GROUP THEN SCHEDULED TO RETURN TO NORTH AVENUE BEACH WHERE "ROCK BAND" WILL CONTINUE ENTERTAINMENT. USA, SECRET SERVICE, MILITARY INTELLIGENCE, CHICAGO PD ADVISED. CHICAGO FOLLOWING. LHM FOLLOWS. AM COPY NEW YORK.