A vintageTEK Museum volunteer, Kurt Rosenfeld, who created the TekWiki website, did some excellent photography of almost all the Tektronix 500-series plug-ins and arranged the images into a poster. We previously offered the poster for sale, but now we have made it into two picture puzzles, of 250 and 500 pieces. This listing is for the 500-piece. The assembled puzzle is 19.25 by 23.25 inches (49  by 59 cm). 

There is a lot of specific detail on each piece that would seem to make it easier to locate pieces in the assembled puzzle, but there is a lot of duplication -- "volts/cm" appears in numerous locations for example -- so this puzzle is challenging.