1930-32 Weather Chart Series on spring roller system - 6 chart set
1930-32 Weather Chart Series mounted on multiroller or on chart head with tripod stand -41 , 6 charts available as a set or individually -10 mounting
1931-10 Precipitation
1932-10 Weather Fronts
1933-10 Formation of Clouds
1934-10 Weather Map
1935-10 Pressure and Winds
1945-10 Four Seasons
Large 44x36 format
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