This dataset is a cleaned version of the account book of fur trader Evert Wendell in Albany, NY, transcribed from the original held by the New-York Historical Society. The account book is also available transcribed and translated in a published edition edited by Kees-Jan Waterman and Gunther Michelson. This dataset documents the social connections between 102 Haudenosaunee (Iroquois) and Mahican people between 1695 and 1726, and has been prepared for network analysis by regularizing the spelling of names and using information from the published version of the account book to match individuals who appear under differently spelled names where possible. Source/Target pairs for network analysis were created for individuals with documented interactions with one another, such as people who bought gifts for another person, people who vouched for the credit of another person, or people who traveled together. The network is assumed to be undirected. Date information for edge creation is not included in the dataset but is available in the published version of the account book. Individuals are identified by gender and nation where possible. Individuals in the edge sheet are identified by ID number listed in the nodes sheet.