https://www.lombardiabeniculturali.it/fotografie/schede/IMM-10120-0003112/

http://www.kaimiddendorff.com/?page_id=6635

Adrian Frutiger. Typefaces superimposed: Garamond, Baskeville, Bodoni, Excelsior, Times, Palatino, Optima and Helvetica/ Univers (Adrian Frutiger, 1998, p. 202)
https://www.researchgate.net/figure/A-common-basic-form-of-typefaces-by-Adrian-Frutiger-Typefaces-superimposed-Garamond_fig58_281745318