Here is a list of the artists who worked for JCA, and the comic book publishers, book series, and character story series for which they produced artwork:
JASON COMIC ART Studio (Aka LEON JASON STUDIOS): Packager
Packaged or supplied comics for:
ADVENTURES OF JO-JOY IN A PRESENT FOR SANTA. . .~ 1953 premium for W.T. GRANT
> 53
ATOMAN 1946
> 46
BEANIE
BENNY BEAR
BILL AND KOO
CHIPPY CHIPMUNK
CIRCUS COMICS
CLOWN COMICS
DIZZY AND DAFFY
FRISKY FABLES
JEEP COMICS 1948
> 48
KO KOMICS 1945
> 45
KOKO AND KOLA
LATEST COMICS
LAW AGAINST CRIME 1948
> 48
MARVIN THE GREAT 1946 in ATOMAN
> 46
NUTTY COMICS c1945-c47
> 45 46 47
PADDY AND CHUCK
POP-POP COMICS 1945
> 45
PUNCH AND JUDY
SPOOKY MYSTERIES 1946
> 46
THREE RING COMICS
TICK TOCK TALES
TOM-TOM THE JUNGLE BOY
WINKIE & NITE OWL
1940s For: LEFFINGWELL
> 40 41 42 43 44 45 46 47 48 49
1945-46 For: ROUND PUBLISHING(JAMBOREE); SPOTLIGHT; SPARK
> 45 46
1945-49 For: NOVELTY COMICS (FRISKY FABLES)
> 45 46 47 48 49
1945-55 For: ACE; BETTER; D.S.; EC; HARVEY; HILLMAN; CIRCUS
> 45 46 47 48 49 50 51 52 53 54 55
1946-48 For: STREET AND SMITH; YOUR GUIDE; CROYDEN; MARVEL
> 46 47 48
1946-51 For: MAGAZINE ENTERPRISES
> 46 47 48 49 50 51
1951 For: STANHALL
> 51
Studio Personnel:
BANKER, GEORGE c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
BERUBE, PHIL (pen/ink/) 1945-60
> 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
BRYANT, DAVID c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
CABRAL, JAMES name on back of original comic art from JCA; possibly artist or letterer
CALPINI, ORESTES (pen/ink/) mid-1940s
> 44 45 46
CHAMBERS, ELLIS (pen/ink/) mid-1940s
> 44 45 46
DELGADO, GILBERT c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
FILLION, ERNEST c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
FRUBELL, ROBERT c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
GALLANT, YVETTE c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
GOLDEN, TOM (pen/ink/) 1940s unconfirmed
> 40 41 42 43 44 45 46 47 48 49
HALL, HENRY c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
HERSEY, ALLISON c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
HOUGH, GAIL c1946 name found on back of original art prepared by studio for NUTTY COMICS; possibly artist or letterer
> 46
HUDSON, BILL (wr/pen/ink/) 1945-47
> 45 46 47
JASON, LEON (own/dir/ed/) 1945-55-
> 45 46 47 48 49 50 51 52 53 54 55 56 57
KAJUTI, CAROL c1946 name found on back of original art prepared by studio; possibly artist or letterer
> 46
LITTMANN, PETER name on back of original comic art from JCA; possibly artist or letterer
MAFFINI, EDWARD c1946 name found on back of original art prepared by shop for NUTTY COMICS
> 46
MAFFINI, EDWARD name on back of original comic art from JCA; possibly artist or letterer
MORTON, JAY (wr/) 1940s manager?
> 40 41 42 43 44 45 46 47 48 49
OTTENHEIMER, FRED (wr/pen/ink/) unconfirmed
POST, HOWIE (pen/ink/) unconfirmed
RILEY, LARRY (pen/ink/) 1945
> 45
RYAN, DOROTHY c1946 name found on back of original art prepared by shop for NUTTY COMICS; possibly artist or letterer
> 46
RYAN, DOROTHY name on back of original comic art from JCA; possibly artist or letterer
SILVERMAN, LAWRENCE (pen/ink/) 1946-49
> 46 47 48 49
SPARACO, HAROLD c1946 name found on back of original art prepared by shop for NUTTY COMICS; possibly artist or letterer
> 46
SPARACO, HAROLD name on back of original comic art from JCA; possibly artist or letterer
TARAS, MARTIN (pen/ink/) 1945
> 45
WOOD, PAT (pen/ink/) c1945