Filtering by: Creator Curtis, Heber Doust, 1872-1942 Remove constraint Creator: Curtis, Heber Doust, 1872-1942 Type Image Remove constraint Type: Image Series Series 6: Glass Negatives Remove constraint Series: Series 6: Glass Negatives People D. O. Mills Observatory Remove constraint People: D. O. Mills Observatory Place Lick Observatory Remove constraint Place: Lick Observatory