This 1980 Contractors Trade Directory is a valuable addition to any collection of agricultural memorabilia. The directory contains a wealth of information on contractors and services in the agriculture industry, making it a must-have for anyone interested in the history of agriculture. The directory's categories include Collectibles, Advertising, Agriculture, and Other Agricultural Ads, highlighting its relevance to a variety of fields. The theme of the directory is Agriculture, making it an excellent resource for anyone interested in the industry's history and practices.