Almanack 1738 (Vol. 1) pages [1/4] is an Almanac Page in Assassin's Creed III.
Location
This Almanac 1738 Volume 1 page is found Southwest of St. Paul's Chapel in western New York.
From the Chapel, go a few blocks down, then west, then half a block down (see map)
The page is located in the western end of the New York map, pretty close to the docks.