Magazine illustration Google Books "The Monarch of the Mountains", Harper's New Monthly Magazine, No. CCLII, May, 1871, Vol. XLII, p.816
"If science is entitled to great credit for scaling Mont Blanc, art is no less so. For our pictures we are largely indebted to a French photographer - M. Bisson - who, in 1861, succeeded not only in ascending Mont Blanc, but in carrying his photographic apparatus with him to the very summit."
