Gaffield, Chad2015-04-292015-04-2920052005chapter in Jeff Keshen and Sylvie Perrier, eds., Building New Bridges-Batir de nouveaux ponts: Sources, Methods and Interdisciplinarity Ottawa: University of Ottawa Press, 2005:265-274.http://hdl.handle.net/10393/32291This chapter analyses the nineteenth-century creation of census enumeration forms as a way of thinking through the complexities of authorship for historical documents and of interpretation for historical research.encensus enumerationsnineteenth centuryHistoryEvidence of What? Changing Answers to the Question of Historical Sources as Illustrated by Research Using the CensusBook Chapter