With the winter holidays upon us, we thought we’d take a look at the collection to see what we had related to law enforcement and Thanksgiving.Photo, stereoview, 1938. 2006.369.1. Collection of the NLEM, Washington, DC.The photograph is a 1938 stereo photograph, made to be looked at with a viewer for a three-dimensional effect. The photo was taken at the 1938 Boston Thanksgiving Day parade on Beacon Street. The white building wing peeking out of the right side of the images is the Boston State House annex that dates from 1917. The men who are holding the tether lines are dressed either as convicts (in striped clothing) or as law enforcement officers (in keystone cops helmets).While we don’t yet know what organization sponsored this parade, it appears to be in keeping with New York’s Macy’s Thanksgiving Day parade. We have been able to find one other photograph of what appears to be the same balloon in the New York Macy’s parade from the year before (1937) at the Corbis collection. The tether holders in that photograph are dressed as keystone cops.If you have any information on this parade, we would love to hear from you in the comments below.Have a great Thanksgiving!