A major new exhibition celebrating 40 years of Scottish theatre opens this weekend.

A hand-written script for the popular production The Steamie and a gold costume worn by Hollywood actor Alan Cumming in The Bacchae are among the highlights of the show at the National Library of Scotland in Edinburgh.

The exhibition charts the country's stage successes from the 1970s, including the groundbreaking work of the 7:84 Scotland theatre company, right through to the launch of the National Theatre of Scotland three years ago.

Exhibits include props, posters and photographs of famous acting talents such as Doctor Who star David Tennant and X-Men villain Brian Cox.

The centrepiece is playwright John Byrne's original stage set for The Cheviot, The Stag and the Black, Black Oil which was first performed in 1973.

Paisley-born Byrne is best known as the writer of Tutti Frutti, the 1987 television series which starred Robbie Coltrane, Emma Thompson and Richard Wilson.

The writer and artist also designed album covers for the Beatles and Gerry Rafferty.

He is currently working on the set design for the Edinburgh Festival Theatre production Off Kilter.

The show, Curtain Up: 40 Years of Scottish Theatre, runs from December 19 to May 3.