November 10, 1934. Robert Arthur, Jr. turned 25 on this day, so call the publication of "Too Dumb To Be Fooled" in Detective Fiction Weekly a birthday present. You can read the whole story here.
Arthur had been getting published since 1930. In the 1960s he wrote first ten volumes of the children's mystery series, Alfred Hitchcock and the Three Investigators. He also edited many of the wonderful Alfred Hitchcock Presents anthologies before passing away in 1969.