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[MANUSCRIPTS] ARCHIVES of Dimitri RIABOUCHINSKY RIABOUCHINSKY, Dimitri (1882–1962) — Autograph • Dimitri Riabouchinsky’s workbook dating from 1953. In French, English, and Russian, 188 pp., 35 x 22.5 cm, as is (wear, stains, glue marks, creases). This notebook contains various work-related materials recorded throughout the year: personal notes, lists, draft letters, summaries and excerpts from speeches, sketch drawings, formulas and calculations, drafts of articles, as well as excerpts from journal articles on scientific and social topics pasted in several places. The notebook contains a series of calculations related to the theory of hydrogazodynamics, as well as a series of articles on the use of the “bazooka” by Allied forces at the end of World War II. It was precisely after reading these articles that D.P. Riabouchinsky concluded that his invention had been used without his knowledge by the U.S. military. These articles led to a legal dispute between the scientist and the U.S. Department of Defense, as well as the suspension of his U.S. patent. [MANUSCRIPTS] DMITRY RYABUSHINSKY ARCHIVE RYABUSHINSKY, Dmitry (1882–1962) – Autograph • Dmitry Ryabushinsky’s 1953 workbook. In French, English, and Russian, 188 pages, 35 × 22.5 cm, in its original condition (scuffs, stains, traces of glue, creases). The notebook contains a variety of working materials recorded throughout the year: personal notes, lists, draft letters, summaries and excerpts from speeches, sketch drawings, formulas and calculations, drafts of articles, and fragments of magazine articles on scientific and social topics pasted in several places. The notebook contains a series of calculations on theoretical hydrodynamics and gas dynamics, as well as a number of articles pasted in regarding the Allied forces’ use of the “bazooka” toward the end of World War II. It was precisely from these articles that D.P. Ryabushinsky would conclude that his invention had been used by the U.S. Army without his knowledge. The articles would lead to a dispute between D.P. Ryabushinsky and the U.S. Department of Defense and the revocation of the American patent.