which had been operating as a separate division of Ring & Associates
to provide computer services to the industry, became incorporated.
Dick Biby, then an employee of Ring, was named
Vice-President of Dataworld. John Lundin took over as Vice-President
when Biby resigned. In 1975, Harold Kassens retired as Deputy Chief
of the FCC Broadcast Bureau and became a partner in the firm.
John Lundin was made a partner in the firm in 1980. Marvin Blumberg
and Harold Kassens retired in 1982, but remained active consultants
the firm. Dataworld was sold to two businessmen from the broadcast
in 1983. Ogden
Prestholdt and Howard Head retired in 1984 and 1986, respectively. In 1987,
then acting President, John Lundin made the monumental decision to
merge the firm with du Treil - Rackley, Consulting Engineers and form du
Treil, Lundin & Rackley, Inc., a subsidiary of AD Ring & Associates.
In 1997 A. D. Ring
du Treil, Lundin & Rackley, Inc., and other successive entities.