1972 Guy St. Clair leads a discussion at the Special Libraries Association (SLA) Annual Conference in Boston, Massachusetts, on “The One-Man Library.” He said he would do so only if the title was changed to “The One-Person Library.” This is the first instance of the term OPL being used.
Guy St. Clair, at the Special Libraries Association (SLA) Annual Conference in Boston, Massachusetts, discussed "The One-Man Library" in 1972. He only agreed to the title change if it was rephrased as "The One-Person Library." This marked the first time the term OPL was used.