The National Map
Users are strongly encouraged to use the new TNM download client. Helpful videos and instructions on how to best take advantage of the viewer's new capabilities can be found at http://viewer.nationalmap.gov/basic/?howTo=true.
Additional information on using The National Map products and services can be found at http://training.usgs.gov/TEL/TheNationalMap/TNM-TEL-Index.html. Videos related to topics presented on this page are: