Leonard Frank produced the panel, Imaginary Interviews, which was distributed by Van Tine Features Syndicate, who held the copyright.
Frank (L[eonard]) Imaginary interviews, v. 1. © July 16, 1935; AA 184132 ; Van Tine features syndicate, inc., New York. 27945
The Van Tine Features comics were announced, with much fanfare, in the West Seattle Herald, (Washington), June 18, 1936, and the Hastings News (New York), January 10, 1936 (below). American Newspaper Comics (2012) said the series ended in 1937.
Specific information identifying Frank has not been found, but there is information about a person with the same name and skills.
The 1940 U.S. Federal Census recorded a “Leonard Frank” in Manhattan, New York City, at 230 Riverside Drive. Born about 1910 in New York, he was an illustrator in the magazine industry. His education included five years of college. His wife, Bernice, was the same age. The New York, New York, Marriage Index, at Ancestry.com, said Frank married Bernice Miller on June 21, 1936.
“Leonard Frank” was found in city directories of Plainfield, New Jersey, for the years 1950, 1953, 1955, 1957 and 1960 (not all years are available at Ancestry.com). He and his wife, Bernice, lived at 648 Sherman Avenue. Frank was a commercial artist.
The Social Security Death Index has a “Leonard Frank” who was born September 14, 1909 and passed away January 23, 1991, but the location was not given. His Social Security number was issued in New York. Bernice passed away June 30, 1998.