Engineer 2nd (US) ATR-3
| Year of Birth | 1820 |
| Sex | horse |
| Colour | grey |
| Sire | Engineer xx (USA) |
| Dam | Dam of Engineer 2nd (US) |
| Damsire | Plato xx (USA) |
| Breeder | Alexander Lewis |
| Birthplace |
Pedigree
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Engineer 2nd
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Foals
| YoB | Name | Colour | Sex | Pedigree | Breeder | Birthplace |
|---|---|---|---|---|---|---|
| Grandam of Cassius M Clay Jr (Neave's) (US) | mare | Engineer 2nd (US) - | ||||
| Spirit (US) | mare | Engineer 2nd (US) - American Eclipse Mare (US) | ||||
| Suffolk Queen (US) | mare | Engineer 2nd (US) - Doctor Bower's Queen Mab (US) | ||||
| Young Engineer (US) | horse | Engineer 2nd (US) - | ||||
| Dam of Milliman's Bellfounder (US) | mare | Engineer 2nd (US) - Grandam of Milliman's Bellfounder (US) | ||||
| Dam of Simonson mare (US) | mare | Engineer 2nd (US) - ? |