Archival Collection #043 - Glass Plate Negative Collection contains an extensive collection of glass plate negatives, many which were likely being used for educational purposes by Museum staff at the turn of the 20th century. The collection is a compilation of glass plate negatives from a variety of undocumented sources and is mostly unprocessed. It includes some portraiture, indicating some may have come from the Camera Shop. Others are labeled as collections from Frank L. DuMond who was a previous Museum DIrector, the Richard Van Altena Collection which contains instructional materials from the Dickenson School and the Vanderveen Collection. There are approximately 48 boxes of the larger 8x10 totalling about 1200 negatives and 70 boxes of the smaller size negatives, totalling more than 1200.