many different kinds of productions over the years, and now produces mostly light farces for a summer theater audience. Mountain Playhouse, one of the oldest professional theaters in the Pittsburgh area, made its debut in nearby Jennerstown in 1939. Similar to St. Vincent, Mountain Playhouse also stages light summer stock fare, including comedies and musicals. Apple Hill Playhouse in nearby Delmont also stages light comedies and musicals as well as children's theater; it was established in the 1950s. Pittsburgh Playhouse, currently home to Point Park University's conservatory students and resident professional theater company Playhouse Rep, opened its doors in 1934 as a community theater. Stage Right was established in the mid-1960s and continues to produce theater in the Fox Chapel area of Pittsburgh. Other important theater companies of the mid-twentieth century include Black Horizon Theater, an African-American theater troupe that evolved out of a writers' workshop; and peer support group called the Centre Avenue Poets' Theater Workshop; this theater company held some of the first productions of August Wilson's work. Pittsburgh Public Theater was chartered in 1974 by Joan Apt, Margaret Rieck and Ben Shaktman and held its first production in 1975. Staging a wide variety of plays and musicals, from classical to contemporary, the theatre has become a major regional theatre and is currently housed in the O'Reilly Theater. City Theatre also staged its first production in 1975 as the City Players, a group of recent college graduates that gave free performances in schools, parks, and housing projects. The company has since evolved to become a major regional theatre that has staged premieres of new works by Christopher Durang, Adam Rapp, Jeffrey Hatcher, Eric Simonson, and Leslie Ayvazian. In 1980, Attilio Favorini founded the Three Rivers Shakespeare Festival, a professional theatre company in residence at the University of Pittsburgh which produced Shakespeare at the Stephen Foster Memorial and was successful for many years. In the 1990s and early 2000s, a new generation of theatre companies emerged. Quantum Theatre was founded in 1990 by Karla Boos; it has staged productions of plays, musicals, and operas from world culture in nontraditional spaces around the Pittsburgh area. The Pittsburgh New Works Festival was established in 1990 as well to provide a venue for new plays by playwrights from all over the country. Pittsburgh Musical Theater opened in 1990 as another venue for musical theater in the city. The performance art troupe Squonk