As Performer === 
 The Metropolitan Opera Company, New York from 1956 to 1961, Marks danced principal roles in: 
 {| 
 |- 
 | Aida || Alcestis || Carmen 
 |- 
 | La Giaconda || The Gypsy Baron || Lucia de Lammermoor 
 |- 
 | Rigoletto || La Forza del Destino || Les Contes d’ Hoffmann 
 |- 
 | Example || Example || Example 
 |- 
 | Example || Example || Example 
 |- 
 | Example || Example || Example 
 |} 

  
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