The Clark tourbillons. IAUTRY, P.Bulletin of the National Association of Watch and Clock Collectors, Inc. 1994, Vol 36, Num 293, pp 763-768, issn 0027-8688Article

The Collecting of Watches (Part 2 of 2)AUTRY, P.Bulletin of the National Association of Watch and Clock Collectors Columbia, Pa. 1984, Vol 26, Num 231, pp 410-425Article

Waltham's Magical MaximusAUTRY, P.Bulletin of the National Association of Watch and Clock Collectors Columbia, Pa. 1980, Vol 22, Num 5, pp 531-539Article

The clark tourbillons. IIAUTRY, P.Bulletin of the National Association of Watch and Clock Collectors, Inc. 1995, Vol 37, Num 297, pp 458-461, issn 0027-8688Article

The Collecting of Watches Part 4AUTRY, P.Bulletin of the National Association of Watch and Clock Collectors, Inc. 1989, Vol 31, Num 261, pp 306-311, issn 0027-8688Article

A William Home Finds a HomeAUTRY, P.Bulletin of the National Association of Watch and Clock Collectors Columbia, Pa. 1978, Vol 20, Num 2, pp 131-142Article