RARE! Two Antique PLATINOGRAPH Photographs, Antique Photography 1901 Calendar

Antique Platinographs are clear even after many years.  A similar or same process as Calotype,  where a weak salt solution was used, the paper dried, then brushed with a weak silver nitrate solution. This made a silver chloride on the paper and was light sensitive. Platinographs had a short life span and were replaced with more well known processes, ie. tintypes, ambrotypes, etc, and as a result. there are very few in existence. The photos are in beautiful shape with little or no fading.  They are  pasted at the top edges to the cardboard. The calendar sheets, however, are in poor condition. In 1901 then famous actress, Mary Mannering, created a sensation playing the lead role in the historical drama 'Janice Meredith," the tale of a loyalist girl who aids the patriot cause and juggles suitors across the political spectrum. Three pages of the 1901 calendar with two platinographs. Calendar pages 11 x 14 Platinograph photos 7 x 8 c. 1900 Antique photography process.