
Although from a historical standpoint, Marilyn Monroe preceded her as a Playboy centerfold, Harrison is the first named official Playmate of the Month. Margie first appeared in the magazine in its January 1954 issue. This picture was purchased, like Marilyn Monroe's from the John Baumgarth Company, which specialized in pin up calendars at the time. Harrison then returned to Playboy as a Playmate in the June 1954 issue. According to the official Playmate Book, Margie also appeared in the men's magazines Gala and Follies.
Playmates were not requested to complete data sheets prior to September 1958.