Quoted from MrBally:Just found this one; Receipt for Gottlieb's "Instruction and Service Manual" that is advertised in the front of the EM part catalogs as well as by a card in the schematic & score card envelopes.
Bought it at the old main Empire Distributing office at 120 South Sangamon in Chicago.
Note the date. Sales tax was only 5% in Illinois. Not to mention that there was no Cook County or Chicago surtax.
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Here’s another sale from 1976 of the same manual.
Original Gottlieb Receipt (resized).jpg