 The Dissemination and Implementation Research Core A research methods core from the Clinical and Translation Science Award at Washington University, in St. Louis Institute of Clinical and Translational Sciences, developed toolkits about dissemination and implementation, D&I, concepts, D&I outcomes, strategies. This paper reports on the development of the toolkits. These toolkits respond to three identified needs for capacity building in D&I research. Resources for investigators new to the D&I field, consolidation of tools and limitations in local contexts. This article was offered by Anna A. Baumann, Alexandra B. Morshed, Rachel G. Tabak and others.