Public Reel

THE KNIFE OF CARLOS VALERO

characters created by Clarence E. Mulford. Summary: A television western featuring Hopalong Cassidy. Credits: Production supervisor, Glenn Cook; director, Derwin Abbe; screenplay, Harrison Jacobs; music, Raoul Kraushaar; film editor, Fred W. Berger. Cast: William Boyd, Edgar Buchanan, Harry Cording

Registration LP2277 Renewed

Term began
1952-09-25
Claimant
William Boyd Productions
Class
LP — published photoplay (numbering series begun Jan. 1950)
Finding
renewal RE74239 filed 1980-12-17 by Grace Bradley Boyd, surviving trustee under the declaration of trust by William L. Boyd & Grace Bradley Boyd dated Jan. 6, 1960; Boyd, William L. (number+date; Copyright Office public records dataset, record 6971715)
Enters the public domain
1 January 2048 (95 years from the 1952 publication)

A renewal registration for this work was found. The renewed term lasts 95 years from the original date, so the work remains under copyright.

Renewal RE74239 (link: number+date, title similarity 1.00)

Renewal claimant
Grace Bradley Boyd, surviving trustee under the declaration of trust by William L. Boyd & Grace Bradley Boyd dated Jan. 6, 1960; Boyd, William L. (PWH)
Renewal date
1980-12-17
Original cited
LP2277 / 1952-09-25
Source
U.S. Copyright Office public records dataset (renewals registered 1978–2025, January 2026 release), control number 6971715: record in the Copyright Public Records System

Structured record, not OCR: renewal number RE74239, registered 1980-12-17, for original registration LP2277 published 1952-09-25.

Catalog entry

Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1953, Internet Archive catalogofcopyrig371213lib (OCR text), lines 10190–10203.

16mm. Based on characters created by 
Clarence E. Mulford. 

Summary: A television western featuring 
Hopalong Cassidy. 

Credits: Production supervisor, Glenn 
Cook; director, Derwin Abbe; screenplay, 
Harrison Jacobs; music, Raoul Kraushaar; 
film editor, Fred W. Berger. Cast: William 
Boyd, Edgar Buchanan, Harry Cording. 

© William Boyd Productions; 25Sep52; 
LP2277. 

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