The Melvin W. Hoch collection contains photographs taken by Hoch during his time working as the photographer for Bethlehem Steel Corporation.

The papers and art work of Christian Friedrich Hellener include materials relating to the history of the Hellener and Morey families, but perhaps more significantly include a fascinating collection of watercolors done by Mr. Hellener over the years. His art work reflects a man who was probably very well-educated, and had a fascination with the world around him. Favorite subjects included members of the animal kingdom, but he also frequently dealt with historical subjects as well. Bright colors and an active imagination can be seen in his art. In addition to works by Mr. Hellener himself, there are also examples of work, both printed and handmade, by other artists. Perhaps most interesting is a poem written by "Von Louis Storck", a Lehigh County resident who was known as a "tramp poet".

Selma Dietrich Sellers, a 1922 graduate of Bethlehem High School, kept a scrapbook for high school and beyond. Includes “The Girl Graduate” scrapbook, photographs, commencement programs and exercises, and Dietrich’s “Music in the Pennsylvania Public Schools” essay from the 1922 commencement ceremony.

The papers of Catherine L. Barlieb (1889-1969) reflect her keen interest in bird watching through numerous notebooks containing detailed accounts of her walks around the city of Bethlehem, meticulous tables chronicling approximately 210 species of birds, and her work with school children through the Junior Audubon Clubs she organized. Barlieb’s passion for wildlife is evident in her papers, offering the researcher an inside view of one woman’s efforts to identify and chronicle numerous species, aiding in conservation initiatives and inspiring an interest in birds in the Lehigh Valley.

The Papers of Sergia P. Montz, 1949-1998, are indispensable in understanding the development of the Puerto Rican community in Bethlehem, PA. Providing a multi-pronged view of the community from the standpoint of education, cultural events, social services, and professional advocacy, the Montz papers offer an informed and self-aware glimpse into the issues and challenges facing the Puerto Rican and Hispanic community in general between 1970 and the early 1990’s.

The Marlene Spector Levine Postcard Collection contains over 800 donated postcards and photographs depicting notable sights and landmarks in the Lehigh Valley. The collection, spanning over 100 years, provides glimpses of these locations as they appeared in the past.