PL. XXIII Sections of Unstratifed and Stratified Drift Various

This volume contains 25 heliotype plates from photographs of Glacial scenery, some two to a page. Plates are by the Heliotype Printing Co., Boston, from photographs by W. H. Jackson, Braun, Frith, Knudsen, Bourne & Shepard. A major example of heliotype printing and the first of what was to be a series. This seems to have been the only publication to make it to press. [1]

References

[1] Hanson, David Checklist of photomechanical processes and printing 1825-1910, 2017