Wikipedia:WikiProject U.S. Roads/New York/Resources/Historical information from the 1920s

A 1924 list was published in the New York Times, New York's Main Highways Designated by Numbers, December 21, 1924, page XX9. 1926 and 1929 maps can be seen at and.
 * Matched NE: Route 1, Boston Post Road from NYC to Port Chester via New Rochelle (shortest route)
 * Became U.S. Route 1 in 1927
 * Matched PA: Route 2, Scranton to Montreal via Binghamton, Syracuse, Watertown, Canton, Potsdam, Malone, past Lake Champlain
 * Became U.S. Route 11 in 1927
 * Route 3, Theodore Roosevelt Highway from Plattsburgh to Niagara Falls via Malone, Ogdensburg, Oswego, Rochester
 * Now Route 9N, Route 86, Route 30, Route 37, Route 192, Route 26, Route 12, Route 12E, U.S. Route 11, Route 104, Route 31, Route 425
 * Matched PA: Route 4, Williamsport to Rochester via Painted Post, Coshocton, Wayland, Conesus Lake
 * Became Route 2 in 1927; now U.S. Route 15, Route 15
 * Matched NE: Route 5, "new main motor route" from Pittsfield to Erie via Albany, Buffalo, avoiding Schenectady, Utica, and Syracuse
 * Replaced Route 5A and replaced by Route 7 between Albany and Buffalo by 1926; became U.S. Route 20 in 1927
 * Route 5A, "old airline route" to Buffalo via those cities, overlapping Route 5 in several places
 * Became part of Route 5 by 1926
 * Route 6, International Highway from NYC to Montreal on the east side of the Hudson River via Albany, Chestertown, Elizabethtown
 * Became U.S. Route 9 in 1927
 * Matched NE: Route 7, Troy to Williamstown via West Sand Lake
 * Became Route 45 by 1926; replaced former Route 5 from Albany to Buffalo by 1926; original route now Route 66, Route 43
 * Matched NJ: Route 8, Paterson to Newburgh via Unionville, Middletown, Montgomery
 * Now Route 284, Route 211, Route 17K
 * Matched NE: Route 9, Bennington to Binghamton via Troy, Schenectady, Oneonta
 * Became Route 7 in 1927
 * Route 10, NYC to Saranac Lake on the west side of the Hudson River via Albany, Saratoga Springs, Tupper Lake
 * Extended to Plattsburg by 1926; became U.S. Route 9W south of Albany in 1927; now US 9W, Route 5, Route 50, Route 9N, U.S. Route 9, Route 8, Route 28, Route 28N, Route 30, Route 186, Route 86, Route 3
 * Route 11, Utica to Oswego via Rome, Camden
 * Became Route 76, Route 69 in 1927 (overlapped other routes west of Colosse)
 * Route 12, Binghamton to Clayton and the Thousand Islands via Norwich, Utica, Watertown
 * Now Route 12
 * Route 13, Elmira to Cazenovia Lake via Ithaca, Cortland, De Ruyter
 * Now Route 13
 * Route 14, Elmira to Sodus Bay on Lake Ontario via Montour Falls, Watkins Glen, Geneva, Lyons
 * Extended south to PA by 1926; now Route 14
 * Route 15, Owego to Rochester via Ithaca, Waterloo, Victor, Pittsford
 * Now Route 96, Route 251, Route 64
 * Route 16, Olean to Buffalo via Franklinville, East Aurora
 * Now Route 16
 * Matched NJ: Route 17, NYC to Erie via Suffern, Middletown, Binghamton, Elmira, Hornell, Olean, Jamestown, Westfield (where it connects with Route 5)
 * Now Route 17 and its former alignments
 * Route 18, Bradford to Buffalo via Salamanca, Cattaraugus, Dayton, Hamburg
 * Now U.S. Route 219, Route 353, U.S. Route 62
 * Route 19, Kingston to Grand Gorge via Ashokan Reservoir and Margaretville
 * Now Route 28 and Route 30
 * Route 20, Syracuse to Oswego via Phoenix and Fulton
 * Became Route 57 in 1927; now Route 481 north of Fulton
 * Route 21, Poughkeepsie to Salisbury via Washington Hollow, Millbrook, Amenia
 * Now U.S. Route 44, Route 343
 * Route 22, NYC to Hillsdale via White Plains, Brewster, Pawling, Armenia, connecting with Route 23
 * Now Route 22
 * Route 23, Great Barrington to Oneonta via Hillsdale, Hudson, Athens (via ferry), Catskill, Stamford
 * Extended west to at least Morris and probably Norwich by 1926; now Route 23
 * Route 24, Stephentown to Comstock via Petersburg, Hoosick Falls, Cambridge, Salem, Granville
 * Now Route 22
 * Route 26, Ithaca to Syracuse via Peruville, Moravia, Skaneateles Lake, Camillus
 * Now Route 13, Route 38, Route 38A, Route 359, Route 41A, Route 321, Forward Road, Route 174, Route 5
 * Route 28, Oneonta to Utica via Springfield, Richfield Springs
 * Now Route 28, Route 80, U.S. Route 20, Route 167, Route 168, Route 5S
 * Matched NE: Route 30, Mechanicville to Fairhaven via Stillwater, Schuylerville, Glens Falls, Hudson Falls, Whitehall
 * Became U.S. Route 4 in 1927
 * Route 34, Buffalo to Youngstown via Tonawanda, Niagara Falls
 * Now U.S. Route 62, Route 104, Route 18F

Additions between 1924 and 1926

 * Route 25, NYC to Greenport
 * Now Route 25
 * Route 27, NYC to Amagansett
 * Now Route 27
 * Route 29, Trenton to Salem via Johnstown, Saratoga Springs
 * Now Route 28, Route 29
 * Route 31, Niagara Falls to Oneida via Ridgeway, Rochester, Lyons, Weedsport, Euclid
 * Now Route 104, Route 31, Route 316
 * Route 32, Williamsville to Olcott via Lockport
 * Now Route 78
 * Route 33, Batavia to Rochester
 * Now Route 33
 * Route 35, East Aurora to Lakeville via Warsaw, Geneseo
 * Swapped with U.S. Route 20 in the late 1920s; now U.S. Route 20A
 * Route 36, Hornell to Avon via Dansville, Mount Morris
 * Now Route 36, Route 63, Route 39
 * Route 37, Monroe to Danbury via Peekskill, Brewster
 * Became U.S. Route 6 in the late 1920s
 * Route 38, Belvidere to Penn Yan via Canaseraga, Hornell, Bath
 * Now Route 16, CR 15B, Route 70, Big Creek Road, Route 54, Route 54A
 * Route 39, Poughkeepsie to Akins Corners via Wappingers Falls, West Pawling
 * Now Route 376, Route 52, Route 216, Route 55, Route 292, Route 311
 * Route 40, Ithaca to Red Creek via Auburn
 * May have been renumbered, at least partly, in the late 1920s; now Route 34, Route 370
 * Route 41, Barrytown to Lakeville via Red Hook, Pine Plains, Millerton
 * Now Route 199, U.S. Route 44
 * Route 42, Owego to Dryden
 * Now Route 38
 * Route 43, Central Bridge to Albany via Clarksville
 * Now Route 443
 * Route 44, Sidney to Utica via Edmeston, Bridgewater
 * Now Route 8, Route 80, Route 51, Route 8
 * Route 45, see Route 7 (1924)
 * Route 46, Oriskany Falls to Boonville via Rome
 * Now Route 26, Route 46
 * Route 47, Chestertown to Ticonderoga
 * Now Route 8, Route 9N
 * Route 48, Lowville to Alexandria via Antwerp
 * Now Route 26 (majorly realigned at Fort Drum)
 * Route 49, Central Square to Rome
 * Now Route 49
 * Route 50, Port Jervis to Kingston via Ellenville
 * Became U.S. Route 6N in the late 1920s; now U.S. Route 209
 * Route 51, Deposit to Stamford via Delhi
 * Now Route 10
 * Route 52, Dansville to Geneva via Cohocton, Potter
 * Now Route 63, Route 415, Route 371, Route 21, Route 245, Route 364, Route 247, Route 245
 * Route 53, Horseheads to Candor
 * Now Route 223, Route 96
 * Route 54, Fonda to Utica via Northville, Wells, Piseco, Poland
 * Now Route 30A, Route 30, Route 8
 * Route 56, north of Paul Smiths to Massena via Lawrenceville
 * Now Route 458, ?, Route 420
 * Route 58, Harriman to Newburgh (not on the NY maps, but on )
 * Now Route 32
 * Route 60, Warren to Fredonia via Jamestown
 * Now U.S. Route 62, Route 60
 * Route 62, Belvidere to Shadigee via Warsaw, Batavia, Alabama
 * Now Route 19, Route 63
 * Route 64, Margaretville to Oneonta via Delhi
 * Now Route 28
 * Route 66, Claverack to Alps via Chatham, Brainard
 * Now Route 66
 * Route 68, Canton to Ogdensburg
 * Now Route 68
 * Route 70, Cortland to Skaneateles
 * Now Route 41
 * Route 72, Naples to Pultneyville via Canandaigua
 * Now Route 21

Additions between 1926 and 1930

 * Route 55, NJ to Goshen
 * Now Route 94, Route 17A
 * Route 57, see Route 20
 * Route 59, Suffern to Nyack
 * Now Route 59
 * Route 61, Suffern to West Haverstraw
 * Now U.S. Route 202
 * Route 74, where? it seems to have been formed from PA to Ashville (NY 474) in 1930
 * Route 76, see Route 11
 * Route 78, Watkins Glen to Geneva via Ovid
 * Now Route 414, Route 96A
 * Route 80, Springfield to Indian Lake
 * Now Route 80, Route 10, Route 8, Route 30

Routes defined in and after 1909
The source for this is the 1919 statutes.
 * Route 1: NYC, Mount Vernon, Eastchester, White Plains, Armonk, North Castle, Bedford, Katonah, Golden's Bridge, Purdy's Station, Croton Falls, Brewster, Patterson, Pawling, Wingdale, Dover Plains, Amenia, Copake, Chatham, Valatie, opposite the Hudson River from Albany
 * Now Route 22, Westchester Avenue, Route 120, Route 22, [not sure from Copake to Chatham], Route 203, U.S. Route 9
 * 1924: Route 22, ?, Route 6
 * Route 2: NYC, Hartsdale, Fair Grounds, Briar Cliff, Ossining, Croton Landing, Cornell Dam, Dixie Hill, Peekskill, Poughkeepsie, Rhinebeck, Blue Store, Johnstown, Bell's Pond, Hudson, Valatie (Route 1)
 * Now Route 100, Route 100A??, Route 100B?, Route 100, Route 100C, Neperan Road, Lake Road, Route 448, U.S. Route 9, Route 129, Croton Avenue, Route 35, U.S. Route 9
 * 1924: Route 6
 * Route 3: NJ, Nyack, Haverstraw, Newburgh, Kingston, Catskill, Athens, Coxsackie, Albany
 * Now U.S. Route 9W, Route 385?, U.S. Route 9W
 * 1924: Route 10
 * Route 3-a: Port Jervis, Hancock (Route 4)
 * Now Route 97
 * Route 4: (Route 3), Middletown, Monticello, Deposit, Windsor, Binghamton, Lestershire, Endicott, Elmira, Horseheads, Corning, Addison, Canisteo, Hornell, Almond, Wellsville, Belmont, Belvidere, Friendship, Cuba, Olean, Salamanca, Little Valley, Napoli, Randolph, Jamestown, Mayville, Westfield
 * Now U.S. Route 6, Route 17 and old alignments
 * 1924: N/A (later Route 37), Route 17
 * Route 4-a: Binghamton (Route 4), Whitney Point, Lisle, Killawog, Marathon, Messengerville, Blodgett Mills, Cortland (Route 9)
 * Now U.S. Route 11
 * 1924: Route 2
 * Route 4-b: Canisteo (Route 4), Greenwood, Rexville, Whitesville
 * Now Route 248
 * Route 5: Kingston, West Hurley, Woodstock, Bearsville, Pine Hill, Margaretville, Roxbury, Grand Gorge, Harpersfield, North Kortright, Davenport, Oneonta, along Route 7 to Colliers, Cooperstown, Richfield Springs, Mohawk (Route 6)
 * Now Route 28, Route 30, Route 23, Route 7, Route 28
 * 1924: Route 19, Route 23, Route 28
 * Route 5-a: Catskill (Route 3), Cairo, South Durham, East Windham, Windham, Ashland, Prattsville, Greene/Delaware County line
 * Now Route 23
 * 1924: Route 23
 * Route 5-b: Cairo (Route 5-a), East Durham, Durham, Cooksburg
 * Now Route 145
 * Route 5-c: west from Palenville
 * Now Route 23A