"Dimpled" and "Zig-Zag" forms:
Beaux Arts, London
Acquired from the above by the present owner, 2000
"Cut Wave" form:
The Clay Studio, Philadelphia
Acquired from the above by the present owner, 2001
Nicholas Arroyave-Portela, Throwing Lines: Nicholas Arroyave-Portela, Leicester, 2002, p. 23 for a similar example
Annie Carlano, ed., Contemporary British Studio Ceramics, exh. cat., Mint Museum of Craft + Design, New Haven, 2010, p. 33 for a similar example