"No copyright restriction known. Staff photographer reproduction rights transferred to Library of Congress through Instrument of Gift." See also https://www.loc.gov/rr/print/res/076_nyw.html
Photographs in this collection other than those identified by such stamps as "World-Telegram photo" or "World-Telegram photo by Ed Palumbo" might not be in the public domain. Works within the collection may be attributed to other news services that retain copyright, works of the U.S. government that are in the public domain in the US, or works with no attribution for which copyright cannot be determined.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.