Trico Plant No. 1 is a historic windshield wiper factory building located in Buffalo, New York. It is an example of a style of architecture sometimes referred to as the daylight factory, a style for which Buffalo is well known. The building was mostly constructed in the 1920s and 1930s of reinforced concrete and features curtain walls of metal sash windows and brick spandrels, although a portion of the plant incorporates an historic brewery building from the 1890s. It was the original home of Trico Products Corporation, the first manufacturer of windshield wipers, and was an important factory during a period when Trico was the largest employer in the city of Buffalo. The building is also known for once being the office of John R. Oishei (1886–1968), the company's founder and an industriali