The Antonelli-Yeldell trial brings together some of the city's most powerful local figures and others with whom they dealt:

Dominic F. Antonelli Jr. - accused of secretly giving Yeldell a $33,000 loan in exchange for a lucrative city lease . . . 56 years old, a Horatio Alger-like figure, once poor but now very rich and powerful . . . controls the city's largest commercial park-in goperation, helped found the Madison National Bank, has an interest in more than $100 million worth of Washington area real estate and more in other states and abroad . . . private, reclusive, but the wielder of much public power through business decisions. His parking spaces helped change the city's commuting patterns; real estate deals helped set patterns for the city's growth . . . lives in Potomac with his wife on a secluded 10-acre estate. Has one adopted som, who works with him, and a grown daughter by his first marriage . . . controls his empire form headquarters at 1725 DeSales St. NW, in the middle of the glass, steel and concrete downtown he helped build. When Antomelli lived in the block during his teens, it was a neighborhood of vermin-infested row houses where Antonelli parked cars for a living . . . described as chivalrous, fiercely aggressive, iron-willed.

Joseph P. Yeldell - accused or arranging the Antonelli lease in return for the $33,000 loan . . . 46-years old, former head of the mammoth, troubled D.C. Department of Human Resources, then general assistant to the mayor, Yeldell requested leave last May as the controversy over the lease grew . . . grew up in poor, black neighborhoods of Washington. A championship orator at Cardozo High School in the 1940s, where he developed a reputation for scrappiness . . . got his first job at age 10. Graduated from D.C. Teacher's College. Went to work in 1954, as a sales trainee for IBM. Later promoted to marketing representative and given the White House account . . . appointed to the first City Council in Washington in 93 years by President Lyndon B. Johnson in 1967 . . . appointed by Mayor Walter Washington to head DHR, where he served for five years before charges of nepotism, cronyism and corruption forced his removal, then named general assistant to Washington.

John W. Lyon - named as the man who referred Yeldell to Antonelli when Yeldell was looking for loan . . . general manager of Antonelli's Parking Management Inc. (PMI) and the president of Excavation Construction Inc., a construction firm now the focus of two unrelated federal grand jury inquiries . . . an old friend and associate of Antonelli, who grew up poor in West Virginia, whose construction company now is a major Metro contractor with $60.1 million in contracts in 1977 . . . Lyon runs PMI on a day-to-day basis but is involved in the construction firm's business at a higher, nonoperating level . . . frequent real estate partner of Antonelli, with some independent business ventures.

Larry A. Campbell - named by the prosecution as the first person Yeldell approached about the $33,000 loan, the first step up the ladder to Antonelli . . . a "dirt-moving man," someone who knows the excavation and construction business from the basics up, runs the day-to-day business of Excavation Construction as general manager . . . born in Spray, N.C., in 1936, completed only the sixth grade, reads and writes with difficulty . . . founded C&E Excavating Co. in the early 1960s as a partner with his brother-in-law, George W. East. C&E failed financially in 1965. Shortly afterward, Campbell became general manager of Excavation Construction with Lyon as president . . . a tough-talking man, who "knows that in the construction business you put your head down and run," according to one industry source . . . now owner of record of 50 percent of the stock of ICE Inc. of Nevada, a holding company that owns Excavation Construction and 50 percent of Interstate Bridge (formerly headed by Robert L. Miller Jr., who was shot to death last May in a Ramada Inn in Rockville in a still unsolved murder).

Louis P. Robbins - was involved as city lawyer in reviewing the controversial office building lease at 60 Florida Ave. NE . . . 47 years old, a graduate of Harvard Law School who left the D.C. Corporation Counsel's Office in 1965 for private practice but returned in 1972 . . . previously served as acting and then deputy corporation counsel before being named acting corporation counsel again this past June, replacing John R. Risher.

Virgil McDonald - one of the bureaucrats asked by Yeldell to help with Antonelli lease . . . assistant director for administration in the D.C. Department of Human Resources . . . 37 years old, DHR's director of general services when DHR was given its own leasing and contracting authority in December 1975.

Sam D. Starobin - tried to block Antonelli lease . . . 54 years old, longtime director of the city's Department of General Services . . . a retired lieutanant colonel in the Army Corps of Enineers, one of the last holdovers from the District's old military-dominated commissioner system of government . . . duties as city's chief contracting and leasing officer placed him squarely in the battle with Yeldell over the leasing of 60 Florida Ave. NE, which Starobin would not approve, leading Yeldell to seek his own leasing authority from the mayor or so DHR could independently lease the building from Antonelli, according to prosecutors.