This commonplace book consists of brief writings and observations on agriculture, arts and manufactures, commerce, the army and navy, canals and roads, weights and measures, general politics, finance, and population. It includes a sketch of the Battle of Quebec groundworks and layout.

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.