These two very long buildings were located on South Road/Route 9 and Neptune Road in Poughkeepsie. I was told these were formerly IBM buildings. Based on aerial photos, they were built some time between 1955 and 1970. The buildings were demolished in 2012 and the site was redeveloped to include several restaurants.
Location: Google Maps (41.644255, -73.923512)
More information: Historic Aerial Photos (see 2009 versus 2016)