Navigation Charts & General Information
U.S. Chart No. 1 (Symbols, Abbreviations and Terms used on Paper and Electronic Navigational Charts)
US Coast Pilot 6 (covers the Great Lakes system - including Lakes Ontario, Erie, Huron, Michigan, and Superior, their connecting waters, and the St. Lawrence River)
Print on Demand (charts, Coast Pilot, US Chart Number 1, distributors)
Electronic Charts (Raster Navigation Charts)
U.S. Aids to Navigation System - What You Need to Know About Markers on the Water
Light List (Volume VII - Great Lakes) - contains a list of lights, sound signals, buoys, daybeacons, and other aids to navigation.