c. 1870 Microphotograph of Blood Cells Under Microscope, Dr. S. W. Fletcher, Pepperell MA (2 of 2) Lilley speculating that the trade card

speculating that the trade card was most likely made for the World's Columbian Exposition of 1893

like a puffer fish blowing up

so as to be useable right away as a frame

woven of ash splint I believe

c. 1870 Microphotograph of Blood Cells Under Microscope, Dr. S. W. Fletcher, Pepperell MA (2 of 2) Lilley speculating that the trade cardI don't know a whole lot about microphotography or about blood cells either, really! but I know that this is a microphotograph (a photograph taken under a microscope) of blood, and that is was produced by Dr. S. W. Fletcher of Pepperell, MA c. 1870s. (Included in documentation is another from the set this came from, that one mounted with printed attribution on the board.) I've learned that William Henry Fox Talbot (18001877) was taking photographs