In the Google map below you will see many color-coded rectangles.  If you click on the corner of any rectangle it will ‘select’ and open a balloon with a link to the respective map.  The rectangles show the map boundary and the color indicates the date of original publication.  You can zoom in and drag the map to get a closer view of the rectangles.

Red = before 1800; Orange = 1800-1849; Yellow = 1850-1899; Blue = 1900-1949; Green = after 1950

[google-map-v3 width=”750″ height=”650″ zoom=”30″ maptype=”roadmap” mapalign=”center” directionhint=”false” language=”default” poweredby=”false” maptypecontrol=”true” pancontrol=”true” zoomcontrol=”true” scalecontrol=”true” streetviewcontrol=”false” scrollwheelcontrol=”false” draggable=”true” tiltfourtyfive=”false” addmarkermashupbubble=”false” addmarkermashupbubble=”false” kml=”http://pahar.in/pahar/Maps–Primary/KML-files/Tibet–Tibet-Map-Institute.kml” bubbleautopan=”true” showbike=”false” showtraffic=”false” showpanoramio=”false”]

These maps are hosted at the Tibet Map Site. You can get more information from there and download individual maps.

Maps of Tibet (157 sheets)