Sept. 1, 2015, photo by Derek Davis/Staff Photographer; 1974 Portland Press Herald photograph courtesy of Portland Portland Library Special Collections & Archives

In this April 1974 Press Herald photograph, Howard C. Reiche, former principal of Portland High School, stands in front of the newly built West End elementary school that was named in his honor. A Sept. 1, 2015, shot of the same location shows students and parents arriving for the first day of school.

The Portland Room of the Portland Public Library is in the process of organizing and conserving the archival collection of original Portland Press Herald, Maine Sunday Telegram and Evening Express photographic negatives — a major collection that spans from 1937 to 2005. Find more photos at www.pressherald.com/flashback/.