Laboratories, etc., correspondence, 1886-1889 Box 20, Folder 105 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
Laboratories. Mt. Chimborazo, Ecuador notes, photos, 1883-1916 Box 20, Folder 107 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
Ladd, J. Wesley, (2), 1900, 1906 Box 5, Folder 182 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
Ladd, William M., (1), 1913 August 11 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
Lailer, F. A., (2), 1913, 1915 Box 5, Folder 183 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
La - Le Box 5, Folder 181 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
"L' Analyse Spectrale," Bulletin de L'Union Pan Américaine , French translation of "Spectrum Analysis,", 1913 May Box 81, Folder 185 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
Lane, Rufus A., Isthmian Canal Commission, (2), 1908 March 11, 13 Box 5, Folder 184 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
Langley, Samuel P. Box 116, Folder 131 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…
Langley, S. P., Smithsonian, (13), 1887-1890, 1893-1894, 1897-1898, 1906 Box 5, Folder 185 Bookmark Collection Context Yale University -Manuscripts and Archives David Peck Todd papers, 1862-1939…