Eminent and versatile Swiss-born American zoologist and geologist (1807–1873) who carried out much of his research as a longtime faculty member at Harvard, where he was also instrumental in building the university’s enviable natural history collection. Uncommon three-quarter-length 4.25 x 6.5 cabinet photo, signed in ink in the image, “L. Agassiz.” In fine condition, with light scattered rubbing, soiling, and spotting to image (one spot shows on his forehead). COA John Reznikoff/PSA/DNA and R&R COA.