WASHINGTON, April 20, 2014 /PRNewswire-USNewswire/ -- Following is the daily "Profile America" feature from the U.S. Census Bureau:

GREEN CATHEDRALS

Profile America — Sunday, April 20th.  This is an important anniversary date for Americans who revere old baseball parks — the Green Cathedrals of nostalgia. April 20 saw the first recognized games played at Boston's Fenway Park, Detroit's Tiger Stadium, Chicago's previously used Wrigley Field, and Baltimore's Memorial Stadium. The years were 1912 for Boston and Detroit, 1916 for Chicago, and 1950 in Baltimore. Fenway Park and Wrigley Field remain cherished outposts of the national pastime. The Detroit and Baltimore parks were closed in the 1990s and demolished in the first decade of this century. There are 814 professional sports teams and clubs in the U.S., 32 of them are major league baseball clubs, and another 250 or so are in affiliated or independent minor leagues. Profile America is in its17th year as a public service of the U.S. Census Bureau.

http://www.historyorb.com/events/april/20  
http://mlb.mlb.com/news/article.jsp?ymd=20110727&content_id=22370240&c_id=mlb 
http://en.wikipedia.org/wiki/List_of_closed_stadiums_by_capacity 
http://factfinder2.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=ECN_2007_US_00A1&prodType=table  NAICS 711211

Profile America is produced by the Center for New Media and Promotions of the U.S. Census Bureau. These daily features are available as produced segments, ready to air, on the Internet at http://www.census.gov (look for "Multimedia Gallery" by the "Newsroom" button). 

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SOURCE U.S. Census Bureau