| LEFF, MO |
| | Name and vital stats |
| | | LEFF, MO [dec] (artist) | NULL |
| | Family in arts |
| | | Brother: Sam Leff (cartoonist) | NULL |
| | Syndication |
| | | JOE JINKS [daily] (ghost pen&ink/) 1936-37 for United Feature Syndicate | > 36 37 |
| | | JOE JINKS [Sunday] (ghost pen&ink/) 1936-37 for United Feature Syndicate | > 36 37 |
| | | JOE PALOOKA [daily] (wr/pen/ink/) 1956-59 for McNaught Syndicate | > 56 57 58 59 |
| | | JOE PALOOKA [Sunday] (ghost pen&ink/) late-1930s-56 for McNaught Syndicate | > 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 |
| | | JOE PALOOKA [Sunday] (wr/pen/ink/) 1956-59 for McNaught Syndicate | > 56 57 58 59 |
| | | LI'L ABNER (ghost pen&ink/) c1936 for United Feature Syndicate | > 36 |
| | | PETER PAT [Sunday] (pen/ink/) 1934-38 for United Feature Syndicate | > 34 35 36 37 38 |
| | | Various features (pen/ink/) 1930s on staff for United Features Syndicate | > 30 31 32 32 34 35 36 37 38 39 |
| | DELL PUBLICATIONS |
| | | EVER READY EDDIE (pen/ink/) 1930 | > 30 |
| | UNITED FEATURES SYNDICATE |
| | | Covers: TIP TOP (pen/ink/) 1936 | > 36 |
| | | PERCY PENGUIN (wr/pen/ink/) 1936-37 | > 36 37 |
| | | PETER PAT (wr/pen/ink/) 1936-37 syndicate reprint | > 36 37 |