McCahon 71 (pencil, l.r.)
2001 Answering Hark: Caselberg/McCahon: Poet/Painter
Auckland Art Gallery Toi o Tāmaki
17/3/2001 - 20/5/2001
A significant number of 'Necessary protection' paintings and drawings were exhibited in McCahon's 1971 exhibition, Necessary Protection, Barry Lett Galleries, Auckland, 1-12 November 1971. No catalogue accompanied the exhibition so it is impossible to determine exactly which works were shown on that occasion.