Original sentence: Manual of Instructions for the Survey of the Public Lands of the United States, 1973 (as PDF) - Official manual for PLSS.NILS GeoCommunicator  - Cadastral records and land parcel information.National Land Information System (NILS)  - Cadastral records and land parcel information including GeoCommunicator below.TRS data to latitude/longitude calculator - for 17 western U.gov  - general reference.org - reference for land surveyors working in the Public Land Survey System
Edited sentence: Manual of Instructions for the Survey of the Public Lands of the United States, 1973 (as PDF) Official manual for PLSS.NILS GeoCommunicator  Cadastral records and land parcel information.National Land Information System (NILS)  Cadastral records and land parcel information including GeoCommunicator below.TRS data to latitude/longitude calculator.gov  Excellent general reference