WASHINGTON - Margaret Burroughs died at the age of 95 last November, a passing noted by President Obama. Over the years, she taught high school and college and was active in civic affairs in the Chicagoarea. But she is best remembered as a founder of one of the first museums devoted to black history and culture in the U.S., the Du Sable Museum of African-American history, started in three rooms of her home. Today, in its own building, the museum houses a large collection of art, documents and artifacts associated with some of the most notable figures in African-American history. Across the nation, there are nearly 6,000 museums and historical sites dedicated to science, culture, and American history.