Photographs from the CPP Special Collections Library were featured in “Rare Photos from the Los Angeles County Fair’s 100 Years.” Fairplex gave its extensive ledgers to the Cal Poly Pomona University Library Special Collections in 2021, including 200 linear feet of boxes filled with programs, racing reports, photos, scrapbooks and films — some of which are featured here. Once this archive is processed, researchers will be able to dig into the rich history of the fair that reflects the region’s agricultural history and provides insight into the county’s industrial, recreational, culinary, technological and public health history. To see more bits of history being added to the archive, follow the CPP Special Collections archive on Twitter.