Begun by Paul and Timothy Loizeaux in 1886(?). First called Bible Truth Depot. First 84 years in New York (see L.o.I. article in comments) before moving to Neptune, New Jersey.
Need a scan of "A century of Christian publishing: Loizeaux Brothers, 1876-1976", not even sure if I have a copy. Another book I have (but not scanned) is "The Loizeaux Saga: Outlines of Our Family's History & Sketches For My Grandchild".
This article from L.O.I. 1964 shows the new depot after they moved to New Jersey from New York; https://www.brethrenarchive.org/periodicals/independent-open-section-non-uk/letters-of-interest/1964-compilation/?page=148&l=1