This item contains the following correspondence:

1. 19 April 1978. Typewritten letter to Johnson discussing micromount mineral specimens, minerals from the United Soviet Socialist Republic (USSR), and the creation of an index of minerals. One page.
   
   
2. 4 May 1978. Small typewritten note to Johnson sent with specimens sent by Pixley for micromount students to study. One page.
   
   
3. 15 June 1978. Typewritten letter to Johnson discussing a list of minerals to appear in the annual report of the Government Chemical Laboratories in Perth (WA), a proposed field trip, redundant mineral names, Johnson's Catalogue of South Australian Minerals, and micromount mineral specimen exchange. One page.
   
   
4. 24 June 1978. Typewritten letter to Johnson discussing annual report of the Government Chemical Laboratories in Perth (WA), mineral specimens and specimen exchange. Attached to the letter is a two page list of minerals. Three pages.
   
   
5. 12 September 1978. Typewritten letter to Johnson discussing Brian Mason and meteorites, and progress on maintaining index of minerals. One page.
   
   
6. 16 October 1978. Typewritten letter to Johnson discussing Johnson's visit to the Flinders Range (SA), the occurrence and identification of various minerals, and mineral specimen exchange. One page.
   
   
7. 6 December 1978. Typewritten letter to Johnson discussing mineral specimen exchange, and the occurrence and identification of minerals. One page.
   
   
8. 9 January 1979. Typewritten letter to Johnson discussing new minerals. One page.
   
   
9. 28 February 1979. Typewritten letter to Johnson discussing identification and indexing of minerals. One page.
   
   
10. 12 March 1979. Typewritten letter to Johnson discussing minerals and mineral specimen exchange. One page.
    
    
11. 26 March 1979. Typewritten letter to Johnson discussing new minerals. One page.
    
    
12. 26 July 1979. Typewritten letter to Johnson discussing correspondence. One page.
    
    
13. 10 August 1979. Typewritten letter to Johnson discussing minerals and mineral specimen exchange. One page.
    
    
14. 18 September 1979. Typewritten letter to Johnson discussing the minerals of Iron Knob (SA) and Iron Monarch (SA), and mineral specimens. One page.
    
    
15. 5 November 1979. Typewritten letter to Johnson discussing general matters and exchanging information with Professor Laurie Lawrence. One page.
    
    
16. 2 January 1980. Typewritten letter to Johnson discussing minerals and mineral specimen exchange. One page.
    
    
17. 21 January 1980. Typewritten letter to Johnson discussing the identification of minerals, an index of minerals and their synonyms, and mineral specimen exchange. One page.
    
    
18. 18 February 1980. Typewritten letter to Johnson discussing the identification of minerals and mineral specimen exchange. One page.
    
    
19. 28 March 1980. Typewritten letter to Johnson discussing general matters, travel to Adelaide, and mineral specimen exchange. One page.
    
    
20. 30 March 1980. Typewritten letter to Johnson discussing the identification of a specimen from Iron Knob (SA). One page.
    
    
21. 14 April 1980. Typewritten letter to Johnson discussing Johnson's assistance in identifying specimens of rare minerals, and Pixley's planned attendance at a Mineralogical Society meeting in Melbourne (VIC) and travel to Adelaide (SA). One page.
    
    
22. 18 May 1980. Typewritten letter to Johnson discussing Pixley's moving house and mineral specimen exchange. One page.
    
    
23. Undated. Typewritten letter to Johnson discussing attendance at Mineralogical Society meeting in Melbourne (VIC), acquisition of specimens of rare minerals, and mineral specimen cataloguing and exchange. Attached to the letter is a one page typewritten list of minerals. Two pages.
    
    
24. 17 July 1980. Typewritten letter to Johnson discussing minerals and mineral specimen exchange. One page.
    
    
25. 1 August 1980. Typewritten letter to Johnson discussing minerals and mineral specimen exchange. One page.
    
    
26. 5 September 1980. Typewritten letter to Johnson discussing general matters, the indexing of minerals occurring in Australia, and mineral specimen exchange. One page.
    
    
27. 23 September 1980. Typewritten letter to Johnson discussing mining access to leased and freehold lands, index of mineral synonyms, and general mineral matters. One page.
    
    
28. 21 October 1980. Typewritten letter to Johnson discussing general matters and the occurrence of minerals in Australia. One page.
    
    
29. 16 December 1980. Typewritten letter to Johnson discussing preparation of an index of Australian minerals for The Australian Museum, and Johnson's Minerals of South Australia. One page.
    
    
30. 11 February 1981. Typewritten letter to Johnson discussing mineral specimen exchange and an index of Australian minerals. One page.
    
    
31. 23 February 1981. Typewritten letter to Johnson discussing planned travel to Melbourne (VIC), the minerals of Victoria, Australia, and mineral specimen exchange. One page.
    
    
32. 11 March 1981. Typewritten letter to Johnson discussing mineral specimen exchange, indexing the minerals of Australia and South Australian micromount collectors. One page.
    
    
33. May 1981. Typewritten letter to Johnson discussing completion of an index of Australian minerals and their synonyms, and mineral specimens. Attached to the letter is a thirteen page list of minerals and their synonyms. Fourteen pages.
    
    

Australian locations mentioned in this correspondence include Broken Hill (NSW), Flinders Range (SA), Harts Range (NT), Narooma (NSW), Mutooroo (SA), Nullagine (WA), Dome Rock (SA), Narre Warren (VIC), Iron Knob (SA), and Iron Monarch (SA).

Individuals mentioned in this correspondence include Brian Mason, Joe Dolanski, John Firman, Professor Laurie Lawrence, Bill Birch, Paul Moore, Julian Hollis, Oliver Chalmers, David New, Ralph Segnit, Jim Woodcock, Ruth Coulsell, Lin Sutherland, Barry Porter, Gill Finlay, Rod Hill, Col Price, Dr CG Murray, and HYL Brown.