Louis Agassiz (1807-1873) Swiss born biologist and geologist who settled in America.  Agassiz is particularly well known for his work on glaciers and theory of an early Ice Age. A nicely centered bold signature on a stiff paper measuring 4.25 x 2.25.  Some light soiling in a few spots away from the signature.  Ideal for framing with an engraving or photo. 

This item is offered by Custodians of History, Inc.  All material comes with a five day return policy and a written lifetime refund guarantee for authenticity, offered to the original buyer.  I am a member of the Professional Autograph Dealers Association and Manuscript Society.  Auctions on eBay are run occasionally but enough to justify saving as a "favorite seller" on your eBay page.