Double Oval by Henry Moore, from Henry Moore Sculpture Perry Green.
Notes
^Tompkins, Herbert W. (1922). Hertfordshire (2nd ed.). London: Methuen. p. 104 – via Project Gutenberg.
^Wilkinson, Alan. "Moore, Henry Spencer". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/39962. (Subscription or UK public library membership required.)