Other valuable works published in the 1950s include Cryptogamic Botany. written by Gilbert Morgan Smith (1885–1959), the algal volume (no.1) was published in 1955. In the following year (1956), Die Gattungen der Rhodophyceen. by Johan Harald Kylin (1879–1949) was published posthumously. Other phycologists who contributed massively to the knowledge of algae include: Elmer Yale Dawson (1918–1966) who published over 60 papers on the algae of the North American Pacific seas (Papenfuss, 1976).[14]