Butterfly (Harvery Manufacturing) Die Filer Operators' Instruction Sheets and Parts List (Sold in the UK brandes as "Excel") 4 pages.

EXCEL No.4 Filing and Sawing Machine. Instruction Book with Illustrated Parts Manual with a copy of the maker's Comprehensive Sales & Technical Specification Catalogue that showing the Models "0", "OS"."No.2", "No.3", "No.3s" and "No.4".