官方服务：
资源简介：
Indiana Sanborn Historic Maps
应用场景：
相关数据集
Boswell (West) British Columbia. 1:50,000. Map Sheet 082F07, ed. 1, 1964
Government of Canada; Army Survey Establishment, 2022, "Boswell (West) British Columbia. 1:50,000. Map Sheet 082F07, ed. 1, 1964", https://doi.org/10.5683/SP3/UTRC37, Borealis, V1
The Canadian Dataverse Repository50
Lac Péribonca Quebec. 1:50,000. Map Sheet 022L03, ed. 1, 1974
Government of Canada; Army Survey Establishment, 2022, "Lac Péribonca Quebec. 1:50,000. Map Sheet 022L03, ed. 1, 1974", https://doi.org/10.5683/SP3/GLQL2K, Borealis, V1
The Canadian Dataverse Repository20
Arundel Ontario. 1:50,000. Map Sheet 031G15, ed. 3, 1976
Government of Canada; Army Survey Establishment, 2021, "Arundel Ontario. 1:50,000. Map Sheet 031G15, ed. 3, 1976", https://doi.org/10.5683/SP3/1XO5SP, Borealis, V1
The Canadian Dataverse Repository30
Grand Bend (West) Ontario. 1:50,000. Map Sheet 040P05, ed. 1, 1951
Government of Canada; Army Survey Establishment, 2021, "Grand Bend (West) Ontario. 1:50,000. Map Sheet 040P05, ed. 1, 1951", https://doi.org/10.5683/SP3/XFPLQV, Borealis, V1
The Canadian Dataverse Repository10
