The main or numbered file series has been maintained using Hall's own filing system. The files contain the minute books and incorporation papers of his two consulting firms but none of the other business records, such as account books, personnel records or customer correspondence that would permit an analysis of their operations. The minute book of Arthur D. Hall, Inc., contains some of the details of Hall's divorce dispute with his second wife Patricia. There is a bit of material for his work for Herr's Potato Chips, Inc. Some data on the workings and personnel of the companies can be found in the many grant proposals written to secure funding for Autofarm.

Another important file consists of Hall's extensive monthly reports written as an expert consultant to the Justice Department in the A.T.&T. antitrust case, in which he expresses his animus against "Ma Bell."

Files on Autofarm include the original patent of 1977 and the documents connected thereto, numerous grant proposals seeking government funding, research materials and correspondence on the general topics of agricultural efficiency, aquaculture, the use of water plants and poplar trees to filter toxins from the environment, energy from biomass and related matters.

Other files concern Hall's relations with his publishers, including the rejections of his later manuscripts and his indignation on learning his publisher had destroyed a large stock of unsaleable copies. There are also copies of Hall's earlier and shorter writings and speeches, at least two of which contain personal memoirs, as well as material related to professional societies and awards.