11 commercials (on 5 film reels) : d., col. ; 16 mm.
24 commercials (on 10 videoreels) : sd., col. ; 2 in.
Political Commercial Archive, Dept. of Communication, University of Oklahoma, Burton Hall, Norman, OK 73019.
Commercials used during Beall's campaigns for the 1970 U.S. senatorial and the 1978 gubernatorial elections in Maryland, Republican party.
Computer database of ca. 50,000 individual commercials.