Astronomical Stero Cards, 1913

JF Ptak Science Books   Quick Post

I own this series of stereoviews but they have yet to surface in our recent move--I did bump into them online at the beautiful University of Heidelberg site, nicely reproduced, though without the the rich glossy blacker-than-black finish in the originals--but these will work nicely. 

Max Wolf, Stereoskopbilder vom Sternhimmel (1. Serie), Leipzig, 1913.

Source:  University of Heidelburg

Also:  Wolf's photographic atlas, here.