Related to the Dupaix expeditions of 1806, four loose notebooks with 23 ink and pencil sketches of Mexican ruins and hieroglyphics. Fragmented text, in Spanish, with images of construction and decoration on stonework, pottery and buildings of various native ruins of the Yucatan. The APS manuscript sketch file has an inventory list of the images.

This diary records the travels of Loammi Baldwin in the Netherlands (then including Belgium), England, and France, with detailed observations and careful pen-and-ink sketches of canals and canal machinery.