the encyclopedia was printed in 1904, 1905, 1907, 1909, and 1911. then a second edition was made from 1914 to 1917. by that time peck and gilman had died, so talcott williams helped edit. a 3rd edition was made in 1923, and more subjects were added to it in 1927 and 1930. a final edition was made in 1935.