MAPS OF VIETNAM
It is now possible to download topographical maps drawn in the 1960's and 70's, from the USGS website.
It is somewhat difficult to find the map of the area you are looking for, but I will try and add in instructions
for finding the maps.
I have placed three maps on this website that you can download in PDF format. There is a software
you can download free from Terrago that will allow you to show the Lat and Lon, and the Military Grid System
by moving the cursor over the map.
MAPS AVAILABLE HERE
These are the topos with the basecamp areas:
An Index map is HERE for selecting the available Topo maps. Areas shaded GREEN are available for download.
Some maps are located on the US Geological Survey website. All are large and take some time to download.