"Indochina: Fight back!" by the Tampa Anti-Imperalist Union, circa 1968. Offset.

Outside of the civil rights movement and a handful of labor campaigns (such as the J.P. Stevens boycott) the broad south is not well represented in U.S. output of new left political posters. If this is from Tampa, Florida it represents a very rare example of such propaganda. Who was the Tampa Anti-Imperalist Union, and when was this poster made?

"Black and Latin [Latino] Workers Conference", artwork by "B.P.P." 1969. Offset.

The scenery in this artwork seems most likely the midwest (Chicago, Detroit). The subject, unity between Black and Latino workers, was a very significant one during the late 1960s. The lack of so much basic information (date? sponsoring organization? location?) suggests that it may have been a prototype, but it was printed offset.

"Benefit May 5th Legal Defence [defense] ; June 11", artwork by Spain Rodriguez, S.F. Bay Area, circa 1968. Offset.

What was the "May 5th legal defense" about? What year? The artwork depicts a massacre of peasant civilians by (U.S.?) soldiers. The artist has no recollection of this poster, and it may well have been done without his knowledge. The Longshoremen's Hall was a heavily-used ILWU facility, host to many political and countercultural events.

"Free Huey [Newton]". Screenprint.

Although at first glance this might appear to be a vintage 1968 Black Panther Party poster, the print is in excellent condition and the lettering is close, but not quite right, for the period. It can be seen on a t-shirt worn by spoken word artist Lupe Fiasco in Howard Zinn's 2009 production "The People Speak." Who produced it, and when?

"BART police: Who they Protect and Serve & who they killed," circa 1992, artist unknown. Offset, 43x28 cm.

The 2009 Oscar Grant shooting by a BART officer in Oakland was not the first example of such misconduct, as this poster shows. I'm looking for artist and/or producer information.

"In 1992, Officer Fred Carbtree, a 15-year veteran of the BART police force, shot and killed an unarmed kid named Jerrold Hall in the parking lot of the Hayward station. That was way before cell phones and ubiquitous video; there were no pictures of the shooting and few witnesses would come forward."
-from the Daily Kos