2295. Murphy, Charles J.V.: 1931.
2296. Murphy, Charles J.V.: 1932.
2297. Murphy, Charles J.V.: 1932-40.
2298. Murphy, Charles J.V.: 1944-46.
2299. Murphy, Charles J.V.: 1946-64 and undated.
2300. Murphy, John: 1938.
2301. Museum of Science: 1949-50.
2302. Museum of Science: 1950-51.
2303. Museum of Science: 1950-55.
2304. Museum of Science, Boston: 1951-57.
2305. Museum of Science, Mariners Museum: 1958-61.
2306. M, miscellaneous (Ma): 1926-57.
2307. M, miscellaneous (Mc-Mi): 1927-57.
2308. M, miscellaneous (Mo-Mz): 1922-64.
2309. M, miscellaneous: 1926.
2310. M, miscellaneous: 1926.
2311. M, miscellaneous: 1926.
2312. M, miscellaneous: 1926-32.
2313. M, miscellaneous: 1926-32.
2314. M, miscellaneous: 1927.
2315. M, miscellaneous: 1927-28.
2316. M, miscellaneous: 1928.
2317. M, miscellaneous: 1928-30.
2318. M, miscellaneous: 1928-31.
2319. M, miscellaneous: 1930.
2320. M, miscellaneous: 1930.
2321. M, miscellaneous: 1930.
2322. M, miscellaneous: 1930.
2323. M, miscellaneous: 1930.
2324. M, miscellaneous: 1931.
2325. M, miscellaneous: 1931.