via
this auction
"This is "The Synthesizer Primer: A little booklet essentially void of company propaganda," by EML, the company that brought you such hits as the Electrocomp series, the 400/401 sequencer and other gems. It contains 16 enriching pages of explanations, illustrations and block diagrams about oscillators, ring modulators, filters, envelope generators and samplers (which are really sample-and-hold modules). There is no publication date, but I'm guessing early-1970's. Printed on thick, textured green paper with two high-quality staples in the spine, this collectable treasure is a must for any swinging electronic music enthusiast."
