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Rare data visualization map focusing on real estate trends throughout American history, published by Roy Wenzlick & Company.

The map illustrates real estate trends in the United States between 1940 and 1950, using a map and series of graphs and diagrams, including a series of coins representing the Shrinkage of the Purchasing Power of the US Dollar between 1900 and 1950.

The chart looks at different regional activities, different tax and monetary metrics, and business cycle correlations.

Wenzlick rose to fame by predicting the boom in real estate values in the 1940s, the period covered by this graphic.  Wenzlick was an avid antique map collector.


The map is very rare. OCLC locates 1 copy (Milwaukee County Library)

Roy Wenzlick & Co. Biography

Roy Wenzlick was active in the St. Louis real estate market his entire life.  His father Albert owned Albert Wenzlick Real Estate.

Wenzlick founded the Roy Wenzlick Research Corporation in 1928.  A company publication, the Real Estate Analyst, was launched in 1932.   His book "The Coming Boom in Real Estate," published in 1936 was a New York Times best seller and when the boom happened, he was launched onto the national stage.

The Wenzlick was also and avid map collector.  He donated his map collection to Westminster College in Fulton, Missouri.