1980s Los Angeles County Museum of Art Frank Stella Exhibition Poster

It states in small type on the bottom of the poster, ‘FRANK STELLA, (American, Born 1936) Protractor Variation, 1969 Fluorescent- alkyd on canvas, 10 x 20ft. Museum purchase fund Copyright 1984 Museum Associates, Los Angeles County Museum of Art, Published in association with ART LEADERS LTD, Los Angeles, California, it also states in a different area, “Printing Alan Lithograph, Inc.
There is some reflection in the photo that is not on the poster, the poster is in excellent condition, never take out of the original wrapper from the printer.