65 p. Selected sections of Appendix GG: Report of Major N. Michler, Corps of Engineers. Included are annual reports upon works of river improvements for the Willamette, Columbia, and Snake rivers.
A black and white image of Castle Rock on the Columbia River. Fir trees line the riverbank and the shoreline in the immediate foreground is covered with stones and pebbles. Five rowboats or sailboats surround a small steamboat. An American flag is visible on one end of the steamboat. One person is in each of four of the smaller boats; the fifth boat is empty and is close to shore.
A black-and-white stereoscopic view published by C.E. Watkins. The caption reads "Castle Rock, Columbia River". A rocky beach is in the foreground. Across the river deciduous trees line the river, with evergreens behind them and covering the low hills which rise behind Castle Rock. The Rock itself displays a number of columns, and is topped with a few trees, which also straggle up its sides.
A wickiup made of boards, poles, mats and cloth is located on the flat, rocky shore of the Columbia River. Nearby are two horses. An unidentified object is on the ground by the wickiup.
Article describing the construction and use of rafts designed to transport lumber on the Columbia River. Also included on the page is the completion of an unrelated article, as well as a summary of the contents of the journal supplement.