Her parents were Helen Gilmore Jacoby and Roger Martin Kyes, a General Motors executive who served as Deputy Secretary of Defense under U.S. President Dwight David Eisenhower.

[5] ABPC, established in 1895, records books, manuscripts, autographs, maps, and broadsides sold at auction in much of the world.

It focuses on North America and the United Kingdom but also tracks countries including Switzerland, Germany, Monaco, the Netherlands, Australia, and France.

With new technology advancing thus, and no sign that the material upon which the record is based is diminishing, we may confidently predict a future at least as long as its past for ABPC.

Both Leab and her husband served on local community organizations, including the zoning board of appeals in the 2000s and 2010s.

"[10] With self-deprecating humor, he expressed thanks "to my wife Katharine Kyes Leab, who has lived with Labor History for over a decade... and never, well hardly ever, complained about the demands made by this journalistic interloper.

[1] Leab was active in the Rare Books and Manuscripts Section of the Association of College and Research Libraries (ACRL) as well as a member of the Bibliographical Society of America.

[14][15] Leab and her husband left ephemera related to book auctions at the end of the twentieth century, open for research.