| Tractor Name | Serial Number | Year Made | Plate Location |
| Hart-Parr 43461 | 5816-5992 | 1914 | |
| Hart-Parr 43461 | 5993-6039 | 1915 | |
| Hart-Parr 15-30 | 2332-2352 | 1910 | |
| Hart-Parr 15-30 | 2353-2382 | 1911 | |
| Hart-Parr 15-30 | 2383-2431 | 1912 | |
| Hart-Parr 17-30 | 1205 | 1901 | |
| Hart-Parr 17-30 | 1206 | 1902 | |
| Hart-Parr 17-30 | 1208-1219 | 1903 | |
| Hart-Parr 17-30 | 1346-1347 | 1905 | |
| Hart-Parr 17-30 | 1435-1454 | 1906 | |
| Hart-Parr 18-30 | 1207 | 1903 | |
| Hart-Parr 20-40 | 4112-4211 | 1912 | |
| Hart-Parr 20-40 | 4714-4763 | 1913 | |
| Hart-Parr 20-40 | 4764-4813 | 1914 | |
| Hart-Parr 22-40 | 70001 | 1923 | |
| Hart-Parr 22-40 | 70021 | 1924 | |
| Hart-Parr 22-40 | 70114 | 1925 | |
| Hart-Parr 22-40 | 70251 | 1926 | |
| Hart-Parr 22-40 | 70494 | 1927 | |
| Hart-Parr 22-45 | 1220-1245 | 1903 | |
| Hart-Parr 22-45 | 1306-1345 | 1904 | |
| Hart-Parr 22-45 | 1415-1434 | 1905 | |
| Hart-Parr 22-45 | 1364-1393 | 1905 | |
| Hart-Parr 22-45 | 1455-1604 | 1906 | |
| Hart-Parr 28-50 | 70501 | 1927 | |
| Hart-Parr 28-50 | 70719 | 1928 | |
| Hart-Parr 28-50 | 70968 | 1929 | |
| Hart-Parr 28-50 | 71401 | 1930 | |
| Hart-Parr 30-60 | 1605-1810 | 1907 | |
| Hart-Parr 30-60 | 1811-2014 | 1908 | |
| Hart-Parr 30-60 | 2325-2331 | 1909 | |
| Hart-Parr 30-60 | 2432-3310 | 1910 | |
| Hart-Parr 30-60 | 3311-3999 | 1911 | |
| Hart-Parr 30-60 | 4212-4711 | 1912 | |
| Hart-Parr 30-60 | 4814-5261 | 1913 | |
| Hart-Parr 30-60 | 5262-5440 | 1914 | |
| Hart-Parr 30-60 | 5441-5521 | 1915 | |
| Hart-Parr 30-60 | 5522-5551 | 1916 | |
| Hart-Parr 30-60 | 5552-5640 | 1917 | |
| Hart-Parr 30-60 | 5641-5715 | 1918 | |
| Hart-Parr 40-80 | 2015-2018 | 1908 | |
| Hart-Parr 40-80 | 2019-2024 | 1909 | |
| Hart-Parr 40-80 | 2025-2100 | 1910 | |
| Hart-Parr 40-80 | 2101-2200 | 1911 | |
| Hart-Parr 40-80 | 2201-2275 | 1912 | |
| Hart-Parr 40-80 | 2276-2300 | 1913 | |
| Hart-Parr 40-80 | 2301-2324 | 1914 | |
| Hart-Parr 60-100 | 4000-4100 | 1911 | |
| Hart-Parr 60-100 | 4101-4111 | 1912 | |
| Hart-Parr A (15-30) | 8401 | 1918 | |
| Hart-Parr A (15-30) | 9384 | 1919 | |
| Hart-Parr A (15-30) | 13026-17915 | 1920 | |
| Hart-Parr A (15-30) | 18470 | 1921 | |
| Hart-Parr A (15-30) | 18851 | 1922 | |
| Hart-Parr B (10-20) | 35001 | 1921 | |
| Hart-Parr B (10-20) | 35217 | 1922 | |
| Hart-Parr C (10-20) | 21001 | 1922 | |
| Hart-Parr C (10-20) | 21393 | 1923 | |
| Hart-Parr C (10-20) | 21899 | 1924 | |
| Hart-Parr E (12-24) | 36001 | 1924 | |
| Hart-Parr E (12-24) | 36075 | 1925 | |
| Hart-Parr E (12-24) | 36601 | 1926 | |
| Hart-Parr E (12-24) | 37195 | 1927 | |
| Hart-Parr E (12-24) | 38119 | 1928 | |
| Hart-Parr E (16-30) | 22501 | 1924 | |
| Hart-Parr E (16-30) | 22602 | 1925 | |
| Hart-Parr F (16-30) | 26001 | 1926 | |
| Hart-Parr F (16-30) | 26360 | 1927 | |
| Hart-Parr H (12-24) | 39602 | 1928 | |
| Hart-Parr H (12-24) | 39687 | 1929 | |
| Hart-Parr H (12-24) | 42278 | 1930 | |
| Hart-Parr H (1b-36) | 28851 | 1927 | |
| Hart-Parr H (1b-36) | 29636 | 1928 | |
| Hart-Parr H (1b-36) | 1-215 | 1929 | |
| Hart-Parr H (1b-36) | 89159 | 1930 | |
| Hart-Parr Red Devil | 6219-6244 | 1914 | |
| Hart-Parr Red Devil | 6245-6743 | 1915 | |
| Hart-Parr Red Devil | 6744-6943 | 1916 |