If you can figure out what's going on here, you may be able to guess the correct year. Put your best guesses in the comments, and we'll update later with the answer, more details and photos.
UPDATE: These photos were taken in 1955, and are of a model of Ebbets Field. When the Brooklyn Dodgers outgrew Ebbets, club owner Walter O'Malley announced plans for a privately-owned domed stadium at the Atlantic Yards in Brooklyn, but New York City Building Commissioner Robert Moses wanted the city to build a stadium in Flushing Meadows instead—the team eventually chose Los Angeles over Queens, and the original field was demolished in 1960. Here's some footage of the old stadium (which opened in 1913) being torn down in front of a group of fans: