Last week, I blogged about a scene from a movie depicting a copy press on top of a safe, and wondered if it was a way they were actually used in offices. Darryn Schneider of DAS Bookbinding in Australia sent me this wonderful image he found from the State Library of Victoria. Bingo! Well, at least there is one documented example….
Peachey Conservation 
I’ll bet that’s the copy book on the corner of the desk (with the marbled edges).
I think you are right – good eye, I missed it!