John Deere Model 'M' Series
In 1938, Harry Ferguson demonstrated his patented three point hitch to Henry Ford, and they teamed up to produce the Ford Model 9N in 1939.  With a price of $585 including rubber tires and electric start, it was very successful.  John Deere realized that they needed to design to compete with the Ford 9N.  Adding electric start and rudimentary hydraulics to the Model L, LA, LI, and H would help with their sales, but a new design was needed .

The Model M was designed slightly offset to the left to make it easier to cultivate with.  It was also produced in a tricycle version, the MT, and industrial version, the MI, and Lindeman developed the Model MC in Yakima, Washington.  Since the models BR/BO tractor production ended in early 1947, the Model M was the right size to replace them.  Although a Model MO was never manufactured, a few prototypes were built.
New York State Two Cylinder Expo

The new model 69 small tractor continued during the early years of World War II, but it could not be built until after the war.  New designs could be developed, but only existing designs could be produced.  Because of Harry Ferguson's patent rights, the three point system could not be incorporated so the "Quik-Tatch system was designed.  A model 69 was built in Moline in late 1943.  After testing in early 1944, implement design began and the model designation was changed to the model M.  By late 1944 the first Model M including a Touch-O-Matic hyrdralic system was tested and in early 1947 production was started in the new Dubuque plant.

Model 'M' Price List
Basic Models:
    'M' - $1,333.00
    'MC' - $2,154.00
    'MT' - $1,454.00
    'MI' - $1,312.00

Popular Options:
    Belt pulley - $43.00
    Lighting attachment - $19.00
    Radiator shutter - $12.00
    Adjustable wide front (MT) - $114.00
    Rear wheel weight - $15.00

Model 'M' series production totals:

Year            'M'            'MC'            'MI'            'MT'
1947          3,734            0                0                0
1948        11,870            0                0                0
1949        10,055        1,093             0            4,728
1950          7,866        2,281           293        10,545
1951          7,055        1,967           392          7,540
1952          5,220        5,169           348          7,660
Totals      45,800      10,510        1,033        30,473 

Nebraska Tests

Model        Test #        Belt HP        Drawbar HP
  'M'            387            20.45                18.15
  'MT'          423            21.6                  18.8
  'MC'          448            22.2                  18.3

Model 'M' series production 

'M'
Year    S/N
1947    10001 - 13373
1948    13734 - 25603
1949    25604 - 35658
1950    35659 - 43524
1951    43525 - 50579
1952    50580 - 55799

Beginning S/N  10001    March 12, 1947
Ending S/N  55799    Sept. 5, 1952
Total Produced    45,799

'MC'                                     
Year    S/N's                        
1949    10001 - 11092
1950    11093 - 13373
1951    13374 - 15340
1952    15341 - 20509

Beginning S/N 10001   Dec. 28, 1948
Ending S/N 20509   Aug. 14, 1952
Total produced    10,509

'MI'
Year    S/N's
1950    10001 - 10292
1951    10293 - 10684
1952    10685 - 11032

Beginning S/N  10001    Nov. 2, 1949
Ending S/N  11032    Aug. 14, 1952
Total produced    1,032

'MT'
Year    S/N
1949    10001 - 14727
1950    14728 - 25272
1951    25273 - 32812
1952    32813 - 40472

Beginning S/N  10001    Dec. 21, 1948
Ending S/N  40472    Sept. 4, 1952
Total produced    30,472
For the full story of the John Deere Model M, refer to "The John Deere Styled 'Letter' Series 1939 to 1952" book by J.R. Hobbs which is available from the Green Magazine, PO Box 95, Bee, NE  68314-0095.