The collection is open for research.
PPI 0107, Gregory C. Wilson collection of African-American postcards and trade cards, Special Collections, University of Delaware Library, Newark, Delaware.
Additional printed material and publications removed for cataloging with imprints in Special Collections.
GRA 0124, Gordon A. Pfeiffer nineteenth-century Delaware trade card collection
PPI 0106, Gordon A. Pfeiffer Delaware postcard and ephemera card collection
Use of materials from this collection beyond the exceptions provided for in the Fair Use and Educational Use clauses of the U.S. Copyright Law may violate federal law. Permission to publish or reproduce is required from the copyright holder. Please contact Special Collections, University of Delaware Library, http://library.udel.edu/spec/askspec/