Elsas Ontario. 1:50,000. Map Sheet 042B10, ed. 2, 1979

This is a georeferenced raster image of a printed paper map of the Elsas, Ontario region (Sheet No. 042B10), published in 1979. It is the second edition in a series of maps, which show both natural and man-made features such as relief, spot heights, administrative boundaries, secondary and side roads, railways, trails, wooded areas, waterways including lakes, rivers, streams and rapids, bridges, buildings, mills, power lines, terrain, and land formations. This map was published in 1979 and the information on the map is current as of 1977. Maps were produced by Natural Resources Canada (NRCan) and it's preceding agencies, in partnership with other government agencies. Please note: image / survey capture dates can span several years, and some details may have been updated later than others. Please consult individual map sheets for detailed production information, which can be found in the bottom left hand corner. Original maps were digitally scanned by McGill Libraries in partnership with Canadiana.org, and georeferencing for the maps was provided by the University of Toronto Libraries and Eastview Corporation.

本数据集为安大略省埃尔萨斯（Elsas）地区印刷纸质地图（图幅编号：042B10）的地理配准栅格图像（georeferenced raster image），该地图于1979年发布。
该地图属于系列地图的第二版，图中涵盖自然与人工地物要素，包括地形起伏、高程点（spot heights）、行政边界、次要道路与支路、铁路、步道、林区、水系（含湖泊、河流、溪流与急流）、桥梁、建筑物、磨坊、输电线路、地表形态与地质构造。
该地图虽于1979年正式发布，但图面信息的现势性截止至1977年。
本地图由加拿大自然资源部（Natural Resources Canada, NRCan）及其前身机构联合其他政府部门合作编制。
请注意：图像采集与外业测量的时间跨度可达数年，部分要素的更新时间可能晚于其他要素。
如需获取详细的编制信息，请查阅单幅地图图幅左下角标注的内容。
原版地图由麦吉尔大学图书馆与Canadiana.org合作完成数字化扫描，地图的地理配准工作由多伦多大学图书馆与伊斯特维奇公司（Eastview Corporation）完成。