School pennants have come in all shapes and sizes over the years, including mini-pennants that range from just a few inches to around 12 inches long. The really small pennants were probably given out as promotional items by the school or maybe came with something bought at the store. The slightly bigger ones were probably bought at OSU’s bookstore, or at other stores around town.
Below are a few examples of small pennants from Oregon State University. These are all from 1961 or earlier, when OSU was still known as Oregon State College. The top three pennants are the smallest, with the first black one only being only about 3 inches long!