The Park Square company, in 1980. /Park Square Archives

Park Square Theatre will celebrate an ending, a beginning and a birthday in September.

Even as you read this, outgoing artistic director Richard Cook, who has been with the theater since its beginnings in 1975, is poring through boxes of props and programs. He's also breaking out the photo albums, seeking material to be used in "Unpacking a Theatre Attic: Park Square's First 43 Years." The free exhibit will be on view Sept. 6-28 in the North Gallery at Landmark Center, 75 W. 5th St. in St. Paul.

Opening night at Landmark Center also is a going-away party for Cook, from 5:30-8 p.m. Near the end of the exhibit, on Sept. 26 from 5:30-7:30 p.m., there will be a chance to meet new artistic director Flordelino Lagundino at the exhibit. For both receptions, RSVPs (and donations) are requested.