| Description | /1. 1 x ms. letter, 13 January [1971]; Ben Nicholson to Sadie Martin (4 sheets; includes drawings and diagrams)
/2. 1 x ms. letter, 24 March [1971]; Ben Nicholson to Sadie Martin (2 sheets; includes diagrams)
/3. 1 x ms. letter, 30 June [1971]; Ben Nicholson to Sadie Martin (1 sheet)
/4. 1 x ms. letter, Bastille Day [14 July 1971]; Ben Nicholson to Sadie Martin (1 sheet)
/5. 1 x ms. letter, 28 July [1971]; Ben Nicholson to Sadie Martin (1 sheet)
/6. 1 x ms. letter, 12 August [1971]; Ben Nicholson to Sadie Martin (1 sheet).
/7. 1 x ms. letter, 14 [August 1971]; Ben Nicholson to Sadie Martin (1 sheet)
/8. 1 x ms. letter, 11? [1972]; Ben Nicholson, Flying Fox to Sadie Martin |