found: Mapping web sites, c2001:t.p. (Krzysztof Lenk) flap (studied graphic design and graduated with an MFA degree from the Academy of Fine Arts in Cracow (Poland); was an IBM fellow at the Aspen Conference 1983; prof. of graphic design at the Rhode Island School of Design, specializing in information design and typography)
found: Projekty i bazgroły 1958-2008, 2009:t.p. (Krzysztof Lenk)
found: Krótkie teksty ... 2011:t.p. (Krzysztof Lenk) p. 199 (b. 1936 in Warsaw)
found: Wikipedia, May 13, 2019:(Krzysztof Lenk; b. July 21, 1936; d. May 22, 2018; graphic designer and educator)