An outstanding entry in your arxiv paper download
Many wonderful treasures are saved in the Harvard plates, but the reality is that the current generation of astronomers are mostly unaware of their existence. J. Grindlay has started and lead the work to completely digitize all ≈500,000 plates (Grindlay et al. 2012; Tang et al. 2013). His program is called Digital Access to a Sky Century @ Harvard (DASCH) . The products are top-quality digitization for each plate (plus the envelope, plate markings, and logbook entry), plus fully-calibrated magnitudes for each stellar image on the plate. Currently, DASCH has completed only ≈15% of the Harvard archives, and this includes all the plates covering the original Cygnus/Lyra Kepler field.