If this is obvious, I apologize in advance for my ignorance, but does Albert Schiller ring a bell for anyone? Printer, type designer, artist? Around early 1900s to 1940s?
The book Typography: When Who How has an entry for a Walter Schiller, born in Hamburg, 1920. Could that be your man?
And according to An A-Z of Type Designers, Walter Schiller co-authored a book with Albert Kapr: Gestalt und Funktion der Typografie (1977, 1983). Both men taught at the Hochschule für Graphik und Buchkunst (HGB) in Leipzig.
(By the way, no entries for an Arthur Schiller in either book, or others I consulted.)
Hey... I like a bit of detective work now and then! :-D
I have a book on Goudy that does not mention anybody named Schiller, but look at what Google turned up at the University of Delaware, in their Frederic W. Goudy Collection:
Frederic W. Goudy: A Memorial by Albert Schiller. Printed by Advertising Agencies’ Service Company, Inc., 1947. Signed by Schiller. 1 item (1 p.).
<Captured from web.archive.org on 2 Dec 2008. view this capture