Conversation so far:
What is the whereabouts of the Hattie McDaniel's Oscar?
The whereabouts of Hattie McDaniel's Oscar is currently unknown.
What happened to Hattie McDaniel's Oscar?
In 1992, Jet magazine reported that Howard University could not find Hattie McDaniel's Oscar and alleged that it had disappeared during protests in the 1960s.
What did Hattie McDaniel win the Oscar for?
Hattie McDaniel is best known for her role in Gone with the Wind, which she won the Academy Award for Best Supporting Actress, the first Oscar won by a black entertainer.
Are there any other interesting aspects about this article, besides what Hattie McDaniel won an Oscar for, and what happened to it?
Hattie McDaniel has two stars on Hollywood Walk of Fame: one at 6933 Hollywood Boulevard for her contributions to radio and one at 1719 Vine Street for motion pictures.
Who wrote the article about repeated rumors that Hattie McDaniel's Oscar had been cast into the Potomac River?
In 2007, an article in The Huffington Post repeated rumors that Hattie McDaniel's Oscar had been cast into the Potomac River by angry civil rights protesters in the 1960s.
Did anything come of the Huffington Post article being published about how allegely Hattie McDaniel's Oscar being thrown into the Potomac River?
The assertion that Hattie McDaniel's Oscar was thrown into the Potomac River reappeared in The Huffington Post under the same byline in 2009.
Was anyone else accused of stealing Hattie McDaniel's Oscar?
In November 2011, W. B. Carter, of the George Washington University Law School, rejected claims that students had stolen Hattie McDaniel's Oscar as wild speculation or fabrication.

Question: Who were the sources?
Self-contained rewrite: Who were the sources who accused others of stealing or mishandling Hattie McDaniel's oscar?