"1958Z"^^ . . "1958-08-13Z"^^ . "Albert Graham Ingalls"@en . "Albert Graham Ingalls (January 16, 1888\u2013August 13, 1958) was an American scientific editor and amateur astronomer. Through his columns in Scientific American, including \"The Amateur Scientist\", and his three-volume series Amateur Telescope Making, Ingalls exerted a great influence on amateur astronomy and amateur telescope making in the United States."@en . . "American astronomer" . . "1888-01-16Z"^^ . "Ingalls, Albert Graham"@en . "1888Z"^^ . . .