The Zodiac Killer (a.k.a "the Zodiac" or just "Zodiac") was the pseudonym of an unidentified serial killer who operated in Northern California in the late 1960s. The Zodiac murdered five known victims in the San Francisco Bay Area between December 1968 and October 1969, in Benicia, Vallejo, Napa County, and San Francisco. The Zodiac claimed to have murdered 37 victims, and he has been linked to several other cold cases.
https://en.wikipedia.org/wiki/Zodiac_Killer
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Police sketch of a suspect seen at the Presidio Heights murder of Paul Stine. The sketch was done by SFPD police artist Juan Morales, made with the help of the Robbins kids, who witnessed the murder. The amended drawing at right was produced after a one-on-one session with Rebecca Robbins. SOURCE?
Police identi-kit composite of a suspect seen at Lake Berryessa by 3 female college students at the lake that day.
The "official" police sketch was apparently a "corrected" version derived from the identikit composite.
Drawing of the Zodiac at Lake Berryessa based on the witness testimony of Bryan Hartnell. Sketch by Juan Morales of SFPD. SOURCE?