List of principal and guide meridians and base lines of the United States

The following are the principal and guide meridians and base lines of the United States, with the year established and a brief summary of what areas' land surveys are based on each. == List of meridians == Primarily from the United States Government Printing Office Style Manual.

Source: Wikipedia — List of principal and guide meridians and base lines of the United States (CC BY-SA 4.0)