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Arrow Map Incorporated Automobile Club of Southern California Buddhist Calendar Dates California State Automobile Association Clason Road Maps Diversified Maps General Drafting Company George F.Cram Company Geographers A-Z Map Company Geographia H. Gousha Company Hagstrom Map Company Midwest Map Company National Automobile Club (San Francisco) Novo Print USA, Inc.It's no secret that people tend to date inside their own circles with celebrity culture only increasing the trend.Actors often date other actors, singers date other singers and the Kardashians date...Remember, globe manufacturers did not always change the names of countries and boundaries immediately. Name changed to Iran in 1935 o Does your globe have Constantinople or Istanbul? 1910 - Union of South Africa (Confirm this) 1910-1945 - Korea was called Chosen by Japan 1910 the four main republics in the region united as the Union of South Africa. Petersburg was renamed Petrograd (1914-1924), thereafter Leningrad, until its original name (St. To learn more about the art of collecting antique and vintage globes, visit OMNITERRUM. 1911 Rhodesia was divided into Northern Rhodesia (now Zambia) and Southern Rhodesia, the latter becoming a self-governing British colony in 1922. Rand Mc Nally USGS Topographic Maps A number which often appears on the panel or in the margin of a map.Take the last two digits of the last four numbers and invert them, e.g., 3680 1209R = 1990.
(Source: David Cobb, Harvard Map Collection)Based on an e-mail exchange between Louise Ratliff and Morgan Yates.
It is important to understand "Map codes" to be able to quickly date maps published by Rand Mc Nally.
Map codes are in very small numbers and letters and are located on the bottom line of each map.
Maps from the 1930s will often have three-digit codes containing just the month and last two digits of the year, generally in that order; 336 = March 1936, for example. 15 1957 (date  last two digits of year reversed [75 = 1957] month ) 124511 = Nov. Clason maps are notorious for having no date information.
12, 1954 (date  last two digits of year reversed [45 = 1954] month )1744 = 1947 ["74" reversed is "1947"] 218412 = 1948 20353 = 1953 1354 = 1953 C-11558 = 1955 15658 = 1956 C-15857 = 1958 C-1859 = 1958 C-5361 = 1963 After this date they seem to use more standard dating, e.g., 9-67 = 1967. Instead, various elements of the maps changed over time.
Do you collect antique or vintage terrestrial globes? 1921-24 - Irish Civil War 1922 - Russia changes to Soviet Union. 1923 - Turkey independent 1924 - Christiana, Norway renamed Oslo 1924 - Leningrad appears1930 - Constantinople becomes Istanbul 1931 - Japan invades Manchuria and renames it Manchukuo In 1931 South Africa became a fully sovereign and self-governing dominion under the British crown.