Roles performed by Marks at American Ballet Theater:    * Theme and Variations * Grand Pas Glazanov * Billy the Kid * Pillar of Fire * Dark Elegies * Gala Performance * Romeo and Juliet * Etudes     * Miss Julie * Moon Reindeer * Sargasso * Gaite Parisienne * Aleko * A Rose for Miss Emily * Tally Ho    * Concerto * Swan Lake * Sleeping beauty * At Midnight * Balladen Der Liebe * Helen of Troy * Coppelia    * Electra * Jardin Aux Lilas * The Moor's Pavane  * Petrouchka * Ricecare * The Taming * Tchaikovsky Pas de Deux      