Harvard Lunar Plates, Plates 920, 921, 922, 932, 1911-02-15/1911-02-18 Digital

Harvard Lunar Plates, Plates 920, 921, 922, 932, 1911-02-15/1911-02-18. Harvard College Observatory observations, logs, instrument readings, and calculations, KG11365-6, phaedra1883, Box: 79. Wolbach Archives, Wolbach Library, Harvard University. https://id.lib.harvard.edu/ead/c/wol00001c11994/catalog Accessed April 27, 2024.