Fagerholm, Per Erik, 1883-1900.
Per Erik Fagerholm papers, 1899-1907 (1899-1900)
Correspondence, notebook from 1907, manuscripts 1899-1900.
Astronomer and photogrammetrizer, geodesist, member of the Royal Academy of Sciences.
Notebooks. ftamc aat
Astronomers -- Sweden. lcsh
Geodesists -- Sweden. lcsh
Photogrammetrizers. lcsh
AIP-ICOS
Kungl. Svenska vetenskapsakademien. Centrum frĖ˛ Vetenskapshistoria. Stockholm, Sweden