W.P. Wilstach Collection.

Eitemau Tebyg

• Catalogue of the W.P. Wilstach Collection : Memorial Hall, Fairmount Park, Philadelphia / ed. by Carol H. Beck.
  Cyhoeddwyd: (1900)
• Catalogue of the W.P. Wilstach Collection : Memorial Hall, Fairmount Park, Philadelphia, edited by Carol H. Beck, supplement.
  Cyhoeddwyd: (1897)
• Catalogue of the W.P. Wilstach collection : Memorial Hall, Fairmount Park, Philadelphia, 1904 / edited by Carol H. Beck.
  Cyhoeddwyd: (1904)
• The W.P. Wilstach collection.
  Cyhoeddwyd: (1913)
• Catalogue of the W.P. Wilstach collection : Memorial hall, Fairmount park Philadelphia, 1907 / edited by Carol H. Beck.
  Cyhoeddwyd: (1907)