- Tractor History by A.C. Seyfarth
- - Cover
- Tractor History, ca. 1933
- - Preface
- - Page 1
- - Page 2
- - Page 3
- - Page 4
- - Page 5
- - Illustration of chart
- - Page 6
- - Page 7
- - Page 8
- - Page 9
- - Page 10
- - Illustration of English steel plowing outfit
- - Page 11
- - Illustration of Old Steam Traction Engines
- - Page 12
- - Illustration of Old Steam Traction Engines
- - Page 13
- - Page 14
- - Page 15
- - Page 16
- - Page 17
- - Page 17a
- - Illustration of early tractor
- - Page 18
- - Page 19
- - Illustration of First Case Gas Tractor
- - Page 20
- - Illustration of Sterling Gasoline Traction Engine
- - Illustration of Hockett Tractor
- - Illustration of Otto Gasoline Tractors
- - Illustration of Gasoline Tractor
- - Page 21
- - Illustration of VanDuzen Traction Engine
- - Page 22
- - Illustration of Huber Gasoline Tractor
- - Page 23
- - Illustrations of Gasoline Traction Engine and Friction Drive Tractor
- - Page 24
- - Illustrations of Hart-Parr Tractors
- - Page 25
- - Illustrations of Otto Tractors
- - Page 26
- - Illustrations from Farm Machinery and Hardware
- - Illustration of Friction Drive Tractor
- - Illustration of IHC Tractor
- - Page 27
- - Illustration of IHC Gasoline Tractor
- - Page 28
- - Illustration of IHC Tractor
- - Page 29
- - Illustration of IHC Friction Drive Tractor
- - Page 30
- - Page 31
- - Illustration of Avery Tractor
- - Page 32
- - Illustration of IHC Tractor
- - Page 33
- - Page 34
- - Page 35
- - Page 36
- - Page 37
- - Page 38
- - Page 39
- - Page 40
- - Page 41
- - Page 42
- - Illustrations from Ford's Tractors
- - Page 43
- - Page 44
- - Page 45
- - Page 46
- - Page 47
- - Page 48
- - Illustration from Tractor and Implement Blue Book
- - Page 49
- - Page 50
- - Page 51
- - Page 52
- - Page 53
- - Illustration of International Tractor
- - Page 54
- - Page 55
- - Page 56
- - Page 57
- - Page 58
- - Page 59
- - Page 60
- - Page 61
- - Page 62
- - Page 63
- - Page 64
- - Page 65
- - Page 66
- - Page 67
- - Page 68
- - Page 69
- - Page 70A
- - Page 70
- - Page 71
- - Page 72
- - Page 73
- - Page 74
- - Page 75
- - Page 76
- - Page 77
- - Page 78
- - Page 79
- - Page 80
- Related Research Materials, ca. 1910-1934
- - Title
- Tractor Production Statistics
- Tractors at Minnesota State Fair, 1910
- Notes on the Development of the Farmall Tractor, 1932
- - Page 88
- - Page 89
- - Page 90
- - Page 91
- - Page 92
- - Page 93
- - Page 94
- - Page 95
- - Page 96
- - Page 97
- - Page 98
- - Page 99
- - Page 100
- - Page 101
- - Page 102
- - Page 103
- - Page 104
- - Page 105
- - Page 106
- - Page 107
- - Page 108
- - Page 109
- - Page 110
- - Page 111
- - Page 112
- - Page 113
- - Page 114
- - Page 115
- - Page 116
- History of the Development of the Farmall Tractor, 1934
- Note on Three-Wheeled Tractor
- The Evolution of a Tractor, ca. 1918
- - Page 117
- - Page 118
- - Page 119
- - Page 120
- - Page 121
- - Page 122
- - Page 123
- - Page 124
- - Page 125
- - Page 126
- - Page 127
- - Page 128
- - Page 129
- - Page 130
- - Page 131
- - Page 132
- - Page 133
- - Page 134
- - Page 135
- - Page 136
- - Page 137
- - Page 138
- - Page 139
- - Page 140
- - Page 141
- - Page 142
- - Page 143
- - Page 144
- - Page 145
- - Page 146
- - Page 147
- - Page 148
- - Page 149
- - Page 150
- - Page 151
- - Page 152
- - Page 153
- - Page 154
- - Page 155