I'm looking through The Rogers Book by Rob Cook and page 30 through 33 lists the Rogers Personnel, Covington Era.
Below are the people listed as "Assembly":
[INDENT]P.A. - Pearl Adams
J.B. - Joyce Bashore - was Supervisor (Covington/Dayton/Fullerton), but also assembled drums based on a picture in the book
H.B. - Helen Beireis
J.B. - Jeannie Black
J.B. - Jeannie Buckingham
B.C. - Bobby Jr. Collins
M.D. - Mary Kay Davis
M.D. - Mary Diltz
R.F. - Roberta Fricke
J.H. - John Harmon - original employee
B.H. - Billie Hartley - Lug Assembly
E.H. - Edna Houck - Lug Assembly 1963 to 1969
R.J. - Ralph Johnson, Sr. - Lug Assembly
F.K. - Forrest Kimmel
R.L. - Roberta Leopard
L.M. - Luellen Minnich
D.P. - Dorothy Platt
D.R. - Darla Rantz
H.R. - Helen Ross
S or O.S. - Ophie Shields (per book), but Rogers Owners Forum post says "S" stands for Sophie Shields)
R.L.S. - Richard Studebaker
K.T. - Kay Trostle
O.W. - Othal Wagner - Lug Assembly
F or F.W. - Frank Walters - Lug Assembly[/INDENT]
I'm sure there are more names, but hopefully this list might help shed some light on other initials that appear in Rogers labels.
I know one thing, I wouldn't want to assemble lugs for 8 hours. I'd lose my mind. :)
Thanks, Rob Cook, for including this information in your book.
-Tim