She worked to preserve Harry Truman’s Little White House and the Biltmore Hotel.
She ran the Coral Gables Museum and served as president of HistoryMiami, chaired Coral Gables' Historic Preservation Board, and the Florida Humanities Council.
[2] She produced films on Miami and Coconut Grove (earning an Emmy Award from the Florida Academy of Television Arts and Sciences) and chaired the Florida Endowment for the Humanities in 1982-83.
[1] She authored and co-authored numerous books on the history of Coral Gables and Miami that have helped shape the scholarly understanding of their respective backgrounds and evolution in the 21st century.
[3] Arva McCabe is credited with expanding and deepening Sanchez' interest and appreciation for George Merrick, which helped shape the project and resulted her the 2006 book George Merrick's Coral Gables: Where 'Castles in Spain' Are Made Real, published by Sanchez' Ponce Circle Developers firm.