Sheriff Lamar Glover said a flat-bed trailer, two tractors and a couple of peanut wagons have been stolen from farms around Ashford and Cottonwood since mid-November.
One of the tractors was an antique 1948 Farm-All model.
A suspicious truck may be connected to the thefts.
Crimestoppers is offering a reward of up to $1,000 for information in the case. If you have information, contact Crimestoppers at 793-7000.