Biography.guide
Home › People › William J. Callahan
Portrait of William J. Callahan

William J. Callahan

Deputy Director of the United States Secret Service

Don't just read it — keep itBiographies to ownE-book · Audio · Video From $7 →

About William J. Callahan

REDIRECT William Callahan

Biography shop

Don’t just read it —
keep it.

Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.

  • E-book
  • Audio
  • Video
Browse the shop — from $7

Instant download · yours to keep · every purchase keeps this site free

Important facts

Education
Johns Hopkins University, Manhattan University, Manhattan College

Frequently asked questions

Who was William J. Callahan?

Deputy Director of the United States Secret Service

Sources & further reading

· Wikipedia: William J. Callahan

· Wikidata: Q29452123

· DBpedia: William J. Callahan

Cite this page

APA: Biography.guide. (2026). William J. Callahan. https://biography.guide/william-j-callahan/

MLA: "William J. Callahan." Biography.guide, https://biography.guide/william-j-callahan/.

Chicago: "William J. Callahan." Biography.guide. https://biography.guide/william-j-callahan/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

Page generated 2026-09-27 05:23 UTC