1950s snow loads

huangyhg

1950's snow loads
does anyone know of a snow loading reference for us for the 1950's?
thanks
check out our whitepaper library.
i collect old engineering books. they have many good and valuable historical data.
i have a copy of elwyn e. seelye’s book, volume one. they have snow map for the us. the map was adopted from american standards code requirements for minimum design loads in buildings and other structures, a58.1-1955. the american standards association published this.
a word of caution on snow loads is the it is dependant on the location. some zones were excluded from the study.
if you cannot get a copy of this map, let me know.
good luck
thank you for responding.  the issue has somewhat resolved itself by using a loading of 25 psf, which would be close to current loading standards.  so no need for the map, but thank you.  
on another note, i was fortunate to have several engineering books passed down to me by my father, although he was a mechanical engineer and i do more civil/structural, engineering is still engineering, and i do see the value of textbooks.