International Harvester, Caterpillar and Ingersoll Rand books
 

One Hundred and Fifty Years of International Harvester - Classic American Tractors by C H Wendel
As new, 420 pages, card covers, £50 to include postage

All in a Day's Work - Seventy Five years of Caterpillar; Gilbert C Nolde
As new hardback, large format 288 pages, £35 to include postage

The Legend of Ingersoll-Rand, by Jeffery Rodengen
Hardback in slip case (when I find the latter), mint condition, 216 pages £25 including postage

Down to £40, £20 and £15 respectively