Series I: Administrative Files, 188, 1997, 2001-2010, 2014 contains the journal launch announcement, editorial board information, editor transition materials, reports, information on presses, history cooperative documents, correspondence, conferences, and information on plagiarism.
Series II: Business Affairs, 2002-2010 holds journal finance information, advertising invoices, fee reports, and information on the back issue program.
Series III: Journal of the Gilded Age and Progressive Era Issues, 2002-2014 consists of correspondence, corrections, reviews, mailing receipts, and essay for the individual issues of the journal.
Series IV: Forums and Special Issues, 2003-2015 includes materials for special issues of the journal such as 1879 Forum, Gender Forum, Gilded Age Forum, Teddy Roosevelt and Europe Forum, and Women's Forum.
Series V: Author Files, 2002-2014 contains article submissions, article drafts, reader's reports, images, copyright forms, and revisions which are sorted alphabetically by author.
Series VI: Media, 2003-2011 consists of 3.5 inch discs and CD-ROMS of issue backups, templates, and images.
Series VII: Ephemera, undated consists of an informational brochure about the Journal of the Gilded Age and Progressive Era.
Series VIII: Society for Historians of the Gilded Age and Progressive Era, 1994-2010, 2013-2016 holds materials about the Society for Historians of the Gilded Age and Progressive Era such as the constitution, meeting minutes, reports, officer lists, committee materials, invoices, bank statements, correspondence, membership lists, newsletters, letterhead, and media.