Charles A. Theisen has been named vice president and personnel officer of First Federal Savings and Loan Association of Alexandria. Theisen joined the association this year after serving as vice president for personnel at the Alexandria National Bank, which later merged into First American Bank of Virginia. An article on Monday's Buiness & Finance pages identified his new position incorrectly because some lines of type inadvertently were dropped. CAPTION: (NEW-LINE)Picture 1, CHARLES A. THEISEN; Picture 2, PATRICIA CARLILE; Picture 3, CORBIN HOSTLER

James L. Denson, who has served as executive vice president of the D.C. Chamber of Commerce since 1974, has been elected president of the chamber.

Denson, who is starting his own consulting and bublic relations firm, has extensive experience in manpower and community development. He has served as a consultant for Volt Technical Service.

While residing in California, he was the executive officer of Service Concepts Inc., a management consulting firm. Prior to that, he was senior consultant wit. Development Associates In. In 1968, Denson served as director of remedial education at Project Build in Washington. Before that, he was senior manpower development specialist for the United Planning Organization.

Charles A. Theisen has been named vice president and personnel officer of First American Bank of Virginia.

C. Edward Little has resigned as president of the Mutual Broadcasting System.

Little has been president of Mutual since Jan. 1972. He cited several reasons for his resignation, the principle one being Amway's initiation of a new management policy on Dec. 1, in which he said Mutual would be managed "by committee."

Dr. Peter Treadway has been named chief economist of the Federal National Mortgage Association, a position that has been vacant since Dr. Harry S. Schwartz retired in August.

Treadway has been senior economists since joining the corporation in March 1976. Before coming to FNMA, Treadway was assistant vice president, economics department, of the Marine Midland Bank.

Patricia Carlile has joined the Bethesda office of Leon A. Farley Associates, a San Francisco-based national executive search firm, as a partner and vice president.

Carlile has more than 15 years of experience in executive recruiting and administration. She conducted presidential searches for the Department of Health, Education and Welfare and the Federal Energy Administration, and assisted the secretary of the Treasury with special projects in the areas of energy, trade and international affairs.

David B. Thompson has been appointed to the board of directors of Peoples Security Bank of Maryland.

Thompson served with the bank in 1964 as its first branch manager. He currently holds the position of executive vice president and recretary.

Corbin Hostler has been promoted to vice president, information services at American Finance Corp.

Hostler began his career with American Finance in 1965 as manager of the Havre de Grace office. He was promoted to the information services department in 1971 where he has served as senior systems analyst, supervisor and director.