Surname of Philip, Architect of 1940s Glass House

This page is the CodyCross answer for the clue below from Mesopotamia, Group 966, Puzzle 5 (Floral Motifs).

Question is: Surname of Philip, Architect of 1940s Glass House

and the answer is: JOHNSON

Word Meaning:

JOHNSON — (slang) Penis.

Definitions from Wiktionary.