9 specimens, the 1930s
Ludlow Typefaces: A Supplement, November 1933
1933 · Ludlow Typograph Company
Book of American Types: ATF Standard Faces
1934 · American Type Founders
Ars Typographica Volume 1 Number 4
1934 · Frederic W. Goudy
The Legibility of Type
1935 · Mergenthaler Linotype
Ludlow Typefaces Recently Produced, April 1936
1936 · Ludlow Typograph Company
Human Touch
1937 · Bauersche Gießerei
Useful Matrix Information
1937 · Mergenthaler Linotype
One Line Specimens and Revised Price List No. 8-A
1938 · Baltimore Type Company
Making Printers' Typefaces
1938 · R. Hunter Middleton