Christie's (International) A.G. (Zurich, Switzerland)

• Christie's sales in Geneva, Spring 1985
• Italian states, commencign with the Medici correspondence
• Letters to and from the Medici family, part I - 1488-1587
• Postal history, 16th-18th century, Europe, Near East
• Schweizer Kunst
• The Avo Krikorian collection
• Works from the Zumsteg collection