This series contains pamphlets, reports, and correspondence regarding the YMCA 19th World Conference in Helsinki, Finland. Helsinki is referred to in the YMCA records as Helsingfors. Much of the correspondence, which is arranged alphabetically, regards preparations being made for the conference. The series also includes a report summarizing discussions and questionnaires at Robert College in Constantinople, Turkey, as well as an itinerary of unknown authorship indicating schedule and driving routes of the Helsinki Conference.