WebJunction

National Integrated Land System - Land Survey Information System
http://www.geocommunicator.gov/GeoComm/lsis_home/home/index.html

The Land Survey Information System or LSIS is the official government Web site for the distribution of the Public Land Survey System (PLSS) of the United States. The Bureau of Land Management (BLM) cadastral survey program is responsible for the official boundary surveys for all federal agencies in the U.S. that together manage over 700 million acres. The Public Land Survey System also called the Rectangular Survey System is the foundation for many survey-based land information systems.

Federal Surface Management Agency Boundaries Map Service
http://www.geocommunicator.gov/GeoComm/fedland/home/index.html

Federal Land Stewardship allows users to view data for the federal land management agency boundaries for public lands within the United States.
 

General Land Office Records
http://www.glorecords.blm.gov/

Provides live access to Federal land conveyance records for the Public Land States, image access to more than two million Federal land title records for Eastern Public Land States, issued between 1820 and 1908, images of Serial patents (land titles issued between 1908 and the mid-1960's) have been added to this web site and images related to survey plats, dating back to 1810, that are added to the site state-by-state as each state's documents are completed.  A sample exercise using the General Land Office (GLO) Records is available in this module.