Persons engaged, as original producers of agricultural products, such as farmers, planters, ranchmen, dairymen, nut or fruit growers, acting together in associations, corporate or otherwise, in collectively processing, preparing for market, handling, and marketing in interstate and/or foreign commerce such products of persons so engaged, may acquire, exchange, interpret, and disseminate past, present, and prospective crop, market, statistical, economic, and other similar information by direct exchange between such persons, and/or such associations or federations thereof, and/or by and through a common agent created or selected by them.