Archived Weather Maps ?

Are there any web sites where you can get archived SFC weather maps from the 60's & 70's - specifically Apr 10-11, 1965 and Apr 3-4, 1974. Thanks for any help.
 
While we're on the subject I'm wondering if there is an online archive of weather maps for areas outside the Continental US. Specifically I'm interested in maps from the 1940s through the 1960s for certain areas of the Pacific.
 
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