Operator #5

Operator #5, later renamed Secret Service Operator #5, was hero pulp published by Popular Publications between 1934 and 1939. The magazine ran for 48 issues. Stories were credited to the house name "Curtis Steele", but actually written by Frederick C. Davis (#1-20), Emile C. Tepperman (#21-39), and Wayne Rogers (#40-48). Tepperman wrote the 13-part Purple Invasion series.