BornCambridge, Massachusetts, USA, 20 January 1881
DiedCambridge, Massachusetts, USA, 10 May 1951
Hired at the age of 18 by Harvard College Observatory director Edward Pickering as a dome assistant, Leon Campbell enjoyed a lifetime of astronomy in and around his home city. In 1911 Pickering sent Campbell to Arequipa, Peru, to direct the Harvard Station there. After his return to Cambridge in 1915, Campbell coordinated the work of Harvard’s volunteer variable star observers and also became intimately involved with the fledgling American Association of Variable Star Observers [AAVSO]. In 1930 Harlow Shapley appointed Campbell to the Edward Charles Pickering Memorial Professorship, which included full-time coordination of the work of the AAVSO.