Tweed Ontario. 1:50,000. Map Sheet 031C06, ed. 4, 1971

This is a georeferenced raster image of a printed paper map of the Tweed, Ontario region (Sheet No. 031C06), published in 1971. It is the fourth 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 1971 and the information on the map is current as of 1968. 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蒂德（Tweed）地区印刷纸质地图的地理参考栅格图像（georeferenced raster image），图幅编号为031C06，于1971年正式出版。该地图为系列地图的第四版，完整涵盖了该区域的自然与人文地理要素，包括地貌、高程点、行政边界、次要道路与支路、铁路、步道、林区、涵盖湖泊、河流、溪流与急流的水系、桥梁、建筑物、磨坊、输电线路、地形与地质构造。
本地图于1971年正式出版，但其所载信息的最新基准年份为1968年。
本系列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周期可能长达数年，部分细节的更新时间可能晚于其他内容。
如需获取单张地图的详细制作信息，请查阅其左下角的标注内容。
原始纸质地图由麦吉尔大学图书馆与Canadiana.org合作完成数字化扫描，地图的地理参考配准工作由多伦多大学图书馆与Eastview Corporation共同提供支持。