- Sammlung2020/2 - John Hargrave : letters from Olive Pink
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- Objekt48 - Letter - 21 October 1969
- Objekt49 - Letter - 24 October 1969
- Objekt50 - Card - 18 February 1970
- Objekt51 - Letter - 20 April 1970
- Objekt52 - Letter - 20 April 1970
- Objekt53 - Letter - 29 July 1970
- Objekt54 - Letter - 12 September 1970
- Objekt55 - Card - 15 November 1970
- Objekt56 - Letter - 19 May 1971
- 4 mehr...