@dataset{currentDoc,
  author = {},
  title = {Collingwood (East) Ontario. 1:50,000. Map Sheet 041A08, ed. 1, 1950},
  publisher = {Other Borealis Collections},
  issued = {1950-01-01},
  howpublished = {{\url{https://doi.org/10.5683/SP3/V3Y3ZN}}}
}