U.S. Coast and Geodetic Survey, Jones, Ernest Lester, 1876-1929 · Washington : Govt. Print. Off. · leaf 87
Fig. 30.—TIDE-PREDICTING MACHINE. y .^j//^ … (.r^ \ i^^ Illustration showing extent ofmade n a single year to keep the chart ofNew York Harbor up to date.
Charts, diagrams, etc
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
