Mary Chaney, sketched from life in the courtroom as well as life on the streets. Over the span of her career as a courtroom artist, Mary Chaney provided illustrations for all of the major television networks, ABC, NBC, CNN, Fox, KTTV, Court TV and other news outlets, as well as to programs such as A Current Affair and Inside Edition.  Additionally, Chaney's work has appeared in such publications as USA Today and The Los Angeles Times as well as in several law reviews and the Los Angeles Downtown Art District publication.

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The archive of Mary Chaney's work covers both historical and high profile cases such as the O.J. Simpson trial, the trial of Hollywood madam Heidi Fleiss, the Menendez brothers' murder trial, the DEA Agent Enrico "Kiki" Camarena murder trial, the Richard Ramirez Night Stalker trial and the historically significant civil rights case of Rodney King vs. the Los Angeles Police Department, both Federal and Civil trials.

Mary Chaney's drawings are included in the notable collections of Library of Congress, Washington D.C, Smithsonian American History Museum, Washington D.C., the Drug Enforcement Administration Museum & Visitors Center, Washington D.C. and the United States Air Force Art Collection, Washington D.C.  The 2017 Academy Award winning documentary, O.J.: Made in America, features the artist's illustrations from the 1996 Civil Trial.