WASHINGTON – The Library of Congress has acquired the archive of the American Ballet Theatre and plans to open an exhibit celebrating the dance company next week.

The library says the ballet donated its archive of more than 50,000 items from its history. The company is celebrating its 75th anniversary this year. The archive includes photographs, notes, scores, music manuscripts, touring files, business papers and other memorabilia.

Susan Vita, the chief of the library’s music division, says the dance company’s archive will be a centerpiece collection. She says the archive connects with some of the top composers, choreographers, designers and musicians.

On Aug. 14, the library will open an exhibit on the American Ballet Theatre’s history as an international touring company. The exhibit will be shown in Los Angeles in 2015.