Walton High School, ca. 1935.

"An elevated railroad station with the Kingsbridge Armory behind it. A streetcar and an automobile are visible on the road, circa 1915." The Kingsbridge Armory was supposedly the largest armory in the world when it was constructed between 1912 and 1917. It remains the largest armory in New York City. Designed by Pilcher and Tachau, the building occupied nearly 5 acres, the main drill floor is 300 by 600 feet, and the style of the structure evokes many of the railroad stations built around the time of its construction. Originally the building housed munitions as well as the Eighth Regiment, once known for their role as the honor guard at George Washington's inauguration. The military functions of the massive building ceased in 1990s when most of the operations were being run out of a different building, though one small National Guard unit still uses one of the armory annex buildings. In 2013 a proposal was announced to create the world's largest indoor ice center within the armory but as of the start of 2017 the work had still not begun.

In the middle of the 20th century, Wigorot Lundin began making prints of the New York Transit Authority's photographic negatives. Taken in the 1910s and 20s, the photographs show a city in transition, expanding with the advent of new technology. Lundin's Bronx photographs display a borough, growing and consolidating as it becomes further interwoven with transit.