A key issue noted for First appearance of Batgirl (Betty Kane) and First appearance of Bat-Girl. Batman #139 was published by DC Comics on April 1, 1961, as part of a series that began in 1940. Bill Finger and Henry Boltinoff write, and art comes from Bernard Baily, Charles Paris and Sheldon Moldoff. This 36-page issue features Batman, Dick Grayson, James Gordon, Casey the Cop and Bette Kane, among 9 characters cataloged on VerseDB.