Welcome to the Old Iron Registry where you can showcase your collection, while helping to document and preserve the history and stories of old iron around the world. Add your collection to the registry or browse and search for specific models.

David Parfitt spent much of 15 years collecting information to produce the “Steel Wheels Data” registry. Our team is very grateful that he has allowed us to preserve this information in the Old Iron Garage Registry. We want to keep this information as up to date as possible and encourage you to contribute to our Registry.

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Year

Make

Model

Serial #

Location

1928 Caterpillar Thirty

PS 2747

1928 Caterpillar Thirty

PS 3872

Oklahoma

1928 Caterpillar Thirty

PS 3960

South Dakota

1928 Caterpillar Thirty

PS 4051

1928 Caterpillar Thirty

PS 4375

Texas

1928 Caterpillar Thirty

PS 5376

1928 Caterpillar Thirty

PS 5402

1928 Caterpillar Thirty

S 7283

1929 Caterpillar Thirty

S 8214

1929 Caterpillar Thirty

S 8359

California

1929 Caterpillar Thirty

S 8374

California

1929 Caterpillar Thirty

S 9246

California

1930 Caterpillar Thirty

S 9703

1930 Caterpillar Thirty

S 10229

California?

1930 Caterpillar Thirty Orchard

S 10415

Missouri

1926 Caterpillar Thirty

PS 16

1926 Caterpillar Thirty

PS 52

Texas

1927 Caterpillar Thirty

S 5598

1927 Caterpillar Thirty

S 5911

1927 Caterpillar Thirty

S 5934

Utah

1927 Caterpillar Thirty

S 6082

1927 Caterpillar Thirty

S 6121

California?

1927 Caterpillar Thirty

S 6192

Oregon?

1927 Caterpillar Thirty

S 6300

1928 Caterpillar Thirty

S 6387

California

1928 Caterpillar Thirty Wide

S 7021

California

1928 Caterpillar Thirty

S 7218

Ohio

1931 Caterpillar Sixty

PA 13275

Oregon?

1931 Caterpillar Sixty

PA 13464

1925 Caterpillar Thirty

S 3563

California

1925 Caterpillar Thirty (badged as Best)

S 3565

Ohio

1925 Caterpillar Thirty (badged as Best)

S 3587

Ohio

1925 Caterpillar Thirty (badged as Best)

S 3654

1925 Caterpillar Thirty

S 3701

California

1925 Caterpillar Thirty (badged as Best)

S 3762

1925 Caterpillar Thirty

S 3784

California?

1926 Caterpillar Thirty

S 4877

1930 Caterpillar Sixty

PA 9689

1930 Caterpillar Sixty

PA 9997

1930 Caterpillar Sixty

PA 10089

1930 Caterpillar Sixty

PA 10630

Minnesota

1930 Caterpillar Sixty

PA 10633

1930 Caterpillar Sixty

PA 10910

Connecticut

1930 Caterpillar Sixty

PA 11156

1930 Caterpillar Sixty

PA 12813

Kansas

1931 Caterpillar Sixty

PA 12943

Oklahoma

1931 Caterpillar Sixty

PA 13230

California

1929 Caterpillar Sixty

PA 5973

South Dakota

1929 Caterpillar Sixty

PA 6330

Pennsylvania

1929 Caterpillar Sixty

PA 6446

California