The University of Virginia (UVA) has long been the premier institutional host for documentary editing in the United States. Two of the major Founding Fathers papers projects, the Papers of George Washington and James Madison, have made their homes in the University’s Alderman Library for decades. Likewise, Stanford University (Stanford) has been the long-term host institution for the Martin Luther King, Jr. Papers Project, one of only a few large-scale research ventures focusing on an African American. Both UVA and Stanford have also been at the forefront of digital editing and publishing and the digital humanities. Many of the tools, workflows, methodologies, publication strategies, and expertise that have made the intellectual capital represented in documentary and critical editions more accessible to scholars, students, and the general public have been incubated at the two institutions. By including the Digital Edition Publishing Cooperative for Historical Accounts (DEPCHA), the proposed Cooperative leverages connections to the international community of digital humanities scholars focused on Linked Open Data and on creating ontologies for sharing humanities data on the semantic web. DEPCHA has furthered the transfer of knowledge about markup and publication formats for digital editions of historical accounting documents between U.S. and European scholars and technologists, sharing technical expertise developed at the Centre for Information Modeling (Zentrum für Informationsmodellierung—ZIM), Austrian Centre for Digital Humanities, at the University of Graz: the Humanities Asset Management System (Geisteswissenschaftliches Asset Management System—GAMS). By sharing this knowledge with editors and technical teams in the United States, DEPCHA has incorporated American scholars more fully into international communities of practice that involve sharing and harmonizing information resources that accommodate local variations and the distinctive features of particular projects. This collaboration therefore brings together substantial experience and expertise to address the critical issues, challenges, and opportunities that currently face the field of documentary editing: 1) the lack of accessible and robust digital editorial and publication platforms; 2) the issues of standardization versus customization, both within the editorial process and integrated into technical systems; 3) the need for diverse publication outputs; and 4) the immense potential for discoverability, increased accessibility, and expansion of audience. In order to respond to these challenges and opportunities, the University of Virginia/Stanford University Digital Publishing Cooperative (Cooperative) will build the necessary infrastructure to facilitate and support the conceptualization, development, publication, discovery, preservation, and sustainability of digital editions and projects. By doing so, this Cooperative will transform documentary editing in both form and substance by developing an infrastructure that will make digital editing and publishing accessible to a larger community of projects. Additionally, digital publications (both standalone and federated) from Cooperative projects will provide various modes of access and discovery, enhance our understanding of history, and advance scholarly research. By the end of implementation, the Cooperative will have developed: 1) human, technical, and institutional infrastructure to support all aspects of digital publication; 2) a Cooperative website; 3) processes for evaluating and onboarding additional projects; 4) a comprehensive, flexible, extensible system that supports all stages of editorial work and encourages workflows that follow best practices for digital dissemination of multiple content types and digital outputs; 5) three digital publication pipelines; and 6) a business model to support the Cooperative after the grant period.