To date, there are 300 confirmed T206 cards with the Black OLD MILL back.
Including the 48 - Southern Leaguer's with OLD MILL backs....the grand total = 348 subjects with OLD MILL backs
Abbaticchio (brown sleeves)
Abbaticchio (blue sleeves)
Abbott
Alperman
Ames (portrait)
Ames (hands above head)
Anderson
Atz
Baker
Ball (New York)
Ball (Cleveland)
Batch
Bates
Beaumont
Beck
Bell (pitching)
Bender (portrait)
Bender (no trees)
Bender (trees)
Bergen (bat)
Bergen (catching)
Berger
Bescher (arms in air)
Birmingham
Blackburne
Bliss
Bowerman
Bradley (portrait)
Bradley (bat)
Brain
Bransfield
Bresnahan (portrait)
Bridwell (no cap)
Bridwell (portrait-cap)
M. Brown (portrait-red)
M. Brown (Chicago)
Burch (fielding)
Burke
Burns
Bush
Camnitz (arms folded)
Camnitz (arm at side)
Camnitz (hands over head)
Campbell
Casey
Chance (portrait-red)
Chance (portrait-yellow)
Chance (bat)
Chase (portrait-pink)
Chase (portrait-blue)
Chase (white cap)
Chase (dark cap)
Chase (trophy)
Chesbro
F. Clarke (portrait)
F. Clarke (bat)
Clarke (Cleveland)
Cobb (portrait-green)
Cobb (bat on shoulder)
Cobb (portrait-red)
Cobb (bat off shoulder)
Collins (A's)
Congalton
Conroy (fielding)
Conroy (bat)
Covaleski
Crandall (no cap)
Cravath
Crawford (throwing)
Crawford (bat)
Cree
Criss
Dahlen (Brooklyn)
H. Davis (A's)
Harry Davis (A's)
George Davis (Chicago)
Delehanty (Washington)
Devlin
Dineen
Donlin (seated)
Donlin (bat)
Donovan (portrait)
Dooin
Doolan (bat)
Dougherty (arm in air)
Downey (bat)
Joe Doyle (hands over head)
Larry Doyle (portrait)
Larry Doyle (bat)
Dubuc
Duffy
Dunn (Baltimore)
Dunn (Brooklyn)
Durham
Easterly
Egan
Elberfeld (Washington-portrait)
Elberfeld (Washington-fielding)
Evers (portrait)
Evers (bat-yellow sky)
Ferris
Fiene (portrait)
Fiene (throwing)
Flanagan
Flick
Ford
Frill
Freeman
Fromme
Gandil
Gasper
Geyer
Gibson
Gilbert
Goode
Graham (Boston)
Graham (St Louis)
Griffith (portrait)
Griffith (bat)
Hahn
Hallman
Hannifan
Hartsel
Hemphill
Herzog (New York)
Herzog (Boston)
Hinchman (Cleveland)
Hinchman (Toledo)
Hoblitzell
Hoffman (Providence)
Hoffman (St Louis)
Hofman
Howell (hand at waist)
Hulswitt
Hummel
Isbell
Jacklitsch
Jackson
Jennings (portrait)
Jennings (one hand)
Jennings (both hands)
Johnson (portrait)
Johnson (pitching)
Jones (Detroit)
F. Jones (hips)
F. Jones (portrait)
Jordan (portrait)
Jordan (bat)
Joss (portrait)
Joss (pitching)
Keeler (portrait)
Keeler (bat)
Kelley
Killian (hands at chest)
Kisinger
Kleinow (New York-catching)
Kleinow (Boston-catching)
Kleinow (New York-bat)
Kling
Knight (bat)
Konetchy (glove high)
Konetchy (glove low)
Krause (portrait)
Kruger
Lajoie (portrait)
Lajoie (throwing)
Lajoie (bat)
Lake (St Louis-ball)
Lake (St Louis-no ball)
Latham
Lavender
Leach (portrait)
Leach (cap)
Leifield (bat)
Liebhardt
Livingstone
Lobert
Lumley
Magee (portrait)
Magee (bat)
Manning (bat)
Manning (pitching)
Marquard (hands/side)
Marquard (throwing)
Mathewson (white cap)
Mathewson (portrait)
Mathewson (dark cap)
McCormick
McGlynn
McGraw (portrait-cap)
McGraw (pointing)
McIntyre (Brooklyn)
McIntyre (Brooklyn & Chicago)
McQuillan (bat)
McQuillan (ball in hand)
Merkle (throwing)
Meyers
Milligan
Mullin (bat)
Murphy (bat)
Murphy (throwing)
Murray (portrait)
Myers (fielding)
Needham
Nichols (bat)
Nicholls (fielding)
Niles
Oakes
Oberlin
Oldring (bat)
Oldring (fielding)
O'Leary (portrait)
O'Leary (hands/knees)
Overall (portrait)
Overall (yellow sky)
Overall (blue sky)
Owen
Parent
Pastorius
Payne
Pelty (vertical)
Pfeffer
Pfeister (seated)
Pfeister (throwing)
Powell (horizontal)
Purtell
Quillen
Reulbach (no glove)
Rhoades (arm extended)
Rhodes
Ritchey
Rucker (throwing)
Rudolph
Schaefer (Washington)
Schlei (bat)
Schlei (portrait)
Schmidt (throwing)
Schulte (back view)
Scott
Seymour (portrait)
Seymour (throwing)
Sheckard (no glove)
F. Smith (Chicago)
Smith (Chicago, white cap)
Smith (Chicago & Boston)
Smith (Brooklyn)
Smith (Buffalo)
Snodgrass (catching)
Spade
Stahl (glove)
Stanage
Steinfeldt (bat)
Stephens
Stone
Stovall (portrait)
Stovall (bat)
Street (catching)
Sullivan
Sweeney (Boston)
Sweeney (New York)
L. Tannehill (Chicago)
J. Tannehill (Washington)
Tannehill (follow thru)
Taylor
Tenney
Ira Thomas
Tinker (hands/knees)
Tinker (bat on)
Tinker (bat off)
Titus
Turner
Waddell (throwing)
Waddell (portrait)
Wagner (left shoulder)
Wagner (right shoulder)
Wallace
Walsh
Weimer
Wheat
White (Chicago-portrait)
White (Chicago-pitching)
White (Buffalo)
Wilhelm (hands at chest)
Wilhelm (bat)
Willett
Willetts
Williams
Willis (Pittsburg)
Willis (throwing)
Willis (bat)
Wilson
Wright
Wiltse (portrait-cap)
Wiltse (no cap)
Wiltse (pitching)
CYoung (portrait)
CYoung (no glove)
CYoung (glove)
Irv Young
Zimmerman
Updated to add M. Brown (Chicago) and H. Davis to this list.
TED Z