"Standard nomenclature of disease: preliminary printing, April, 1932 ... third edition, June, 1942. Standard nomenclature of operations: first edition, June, 1942."
"Responsibility for ... periodic revision [of Standard classified nomenclature of disease] was ... taken over by the American medical association in 1937. In connection with the third edition ... a fourth National conference on medical nomenclature was held under the auspices of the American medical association in Chicago on March 1, 1940."--p. v.