High-quality black-and-white photographs of large old machines and tools

[Toolmaker51]

My father grew up on several hardscrabble farms. On one they had an old farmall 10-20 with iron wheels. If it hit soft enough ground with heavy enough load he said that it would just start digging with those wheels till the diff hit the ground. If things went well it would slowly chew its way out. If not they went n hitched up the mule to help pull it out.
Eric

"...one day when the oil barons all drip dry...