Letter from Elizabeth Williams to Percival Lowell, August 1, 1913
Telegram from Elizabeth Williams to Percival Lowell, March 18, 1914
Letter from Elizabeth Williams to Wrexie Leonard, November 4, 1909
Letter from Elizabeth Williams to Johnson O'Connor, 1917
Letters between Elizabeth Williams and Thomas Gill regarding least squares and machine computation, 1921
Letter from Elizabeth Williams to Percival Lowell discussing Planet X calculations
Elizabeth Williams corresponded with various people during her time at Lowell Observatory. These letters and telegrams pertain to her work as a computer at the observatory.