The UMD Libraries have invested heavily in organizing, processing, and preserving the Prange Collection. As a result of severe shortages in the post-war years, Japanese publishers were forced to use poor quality, high-acid content paper, and the publications from these years are rapidly deteriorating.
Since the early 1990s, the UMD Libraries have partnered with the National Diet Library of Japan (NDL) to preserve and provide access to the materials in the Prange Collection, which fill a gap in NDL's historical record. Between 1992 and 2001, the Prange magazine and newspaper collections were microfilmed. In 2005, the current project to digitize the 71,000 Prange books began. Major progress has been made toward achieving the UMD Libraries' goal of preserving the entire Collection so that it will be fully accessible.