Fig. 3From: Accumulation of wear and tear in archival and library collections. Part II: an epidemiological studyPlot of number of visitors in the reading room per year between 1901 and 2016 at the Amsterdam City Archives and number of requests according to the counting method used prior to 1997 and the digital counting after 1998. Between 1852, the year the archive was founded, and 1900, no record of the number of visitors was keptBack to article page