Matthews, R. The attack on the Lusitania, 1989: CIP verso of t.p. (Nik Spender)

LC data base, 1-23-89 (hdg.: Spender, Nik)

Jessop, J. Crusaders, 1990: t.p. (Nic Spender)

Thomas Edison, 2000: t.p. (illustrated by Nick Spender)

Nick Spender, via WWW, Dec. 18, 2013 (freelance illustrator working for many of the major publishers and agencies in the UK and overseas)

Transformers Wiki, via WWW. Dec 18, 2013 (Nick Spender (also sometimes credited as Nik Spender) is a British illustrator; graduate, Epsom School of Art and Design; freelance illustrator whose projects include books and book covers, storyboards and comics)