Here is the link to The Stehen Douglas entry in The Grand Comics Database:
https://www.comics.org/creator/12366/Here is a list of his accomplishments and credits from The Grand Comics Database:Vital Statistics:Born: 1907 October 24 in Brooklyn, New York, United States
Died: 1967 month? day? in ?
Notes: To be confirmed against the Who's Who entry.Issue Checklist (via credit search for name "Stephen Douglas")
Issue Checklist (via linked credit records)
List of to be migrated issues (via credit search for name "Stephen Douglas")
Issue Edit List (via linked credit records)
Cover List (via linked credit records)
Series List (via linked credit records)
Characters List (via linked credit records)
Features List (via linked credit records)
Sequences List (via linked credit records)
Story Credits in the GCD (via search for "Stephen Douglas")
Who's Who of American Comic Books
Name:Stephen Douglas Type: Common Alternative Name
Other Names:
SAD Type: Pen Name
S.A.D. Type: Pen Name
Stephen A. Douglas Type: Name at Birth
Given name: Stephen A. Family name: Douglas
Steve Douglas Type: Common Alternative Name
Education:New York University ? to ?
Columbia University ? to ?
Pratt Institute [Brooklyn] ? to ?
Signatures:S A D [generic]
S D [generic]
S. A. D. [generic]
S. D. [generic]
SAD [generic]
SD [generic]
Stephen Douglas [generic]
Steve Douglas
Steve Douglas [generic]
Awards:
1958: National Cartoonist Society Awards (NCS Awards) - Comic Book Division
1963: National Cartoonist Society Awards (NCS Awards) - Silver T-Square Extraordinary Service Award
Memberships:National Cartoonist Society Type: member
For: Editing, story writing
That page includes links that go to pages that provide details to what I have shown above.
Good luck!