Gilson

References for type classification:

Authors: Henry Aldinger and Ed Chamberlain
Title: Gilson Slide Rules – Part I – The Small Rules
Location: Journal of the Oughtred Society Vol. 9, No. 1, Spring 2000 Pg 48

Authors: Henry Aldinger and Ed Chamberlain
Title: Gilson Slide Rules – Part II – The Large Rules
Location: Journal of the Oughtred Society Vol. 9, No. 2, Fall 2000 Pg 47.