The three folio watercolors are by an unknown artist, the designs possibly portraying Mastodon giganteus, which was mounted by James Hall in Albany. The three items are: watercolor of the mounted animal as a design for a fountain, profile of skeleton with the foundation structure, and the foundation only, showing the plan of the water and fountain heads.

During research for "All in the Bones: A Biography of Benjamin Waterhouse Hawkins" Bob Peck determined that these paintings were very likely done by Hawkins as a proposal for a Paris museum. Determination based on archival information and painting style. [JAV 1/12/2015]