The materials in the project were chosen from four collections selected from the group of outdoor advertising collections being processed by Hartman Center staff and students as part of the NEH grant. The four collections [Outdoor Advertising Association of America (OAAA) Records, the OAAA Slide Library, the R. C. Maxwell Outdoor Advertising Collection and the John Paver Papers] were chosen due to the high number of images within each group. Every image in the processed OAAA Records, OAAA Slide Library and John Paver Papers were included in ROAD. Due to the extensive amount of photographs in the R. C. Maxwell Outdoor Advertising Company Collection, only images from 1910 to the early 1950s were included in ROAD.
The ROAD collection metadata was entered into a relational database and then converted to a search engine format for use within the Duke Metadata Repository project. The Metadata Repository aggregates metadata for collections that for various reasons are not appropriate for entry into the Library's Online Public Access Catalog, and exposes collections to aggregate or individual searches. The technological base of the project consists of the Metadata Encoding and Transmission Standard (METS), an xml standard maintained by the Library of Congress, and Apache Lucene, an open-source, Java-programming-language-based search engine. The ROAD metadata in METS format will become available for public harvesting via the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) in the near future. For more information about the Metadata Repository, contact the Library's Information Technology Services Department.