Correspondence between Thomas Gold and Robert A Hefner III Contains correspondence between Thomas Gold and Robert A Hefner III, Jul 1980, Nov 1980-Jun 1981, Aug-Dec 1981, Feb 1982, May-Sep 1982, Nov-Dec 1982, Apr-May 1983, Sep-Oct 1983, Feb-Mar 1984, May 1984, Aug-Dec 1984, Feb 1985, Apr-Jun 1985, Aug-Nov 1985, Feb 1986, May-Jul 1986, Oct 1986. Also contains letters and telexes written by Robert A Hefner III that Thomas Gold was either copied in on or that were sent to him by Hefner, Jan 1982, Mar 1983, Oct 1983, Apr 1985, Jun-Jul 1985, Oct 1985, Dec 1985, Feb 1986, Apr 1986. Also includes a copy of a letter from Thomas Gold to Tord Lindo, dated Feb 1983. The correspondence covers various subjects e.g. project to drill for gas and oil in the Siljan Ring, Sweden; proposal to drill for gas and oil in Charlevoix, the site of a meteorite impact crater, in Quebec, Canada. There are copies of 'The Hefner Report', Volume 1, Issues 2-3, 15 Jan and 2 Aug 1991, a paper by Hefner, 'Natural gas in the decade of the 1990s', Oct 1990, and a paper, probably by Hefner, 'Proposed method of exploration for natural gas and petroleum in the areas of the meteoritic impact structures known as 'Charlevoix' and 'Manicouagan' in the province of Quebec' [nd]. There are also a few articles about exploration, Sep 1983, Mar-Apr 1985, and a colour transparency entitled, 'Chen Yan Ning, 'Return at dusk''. Jul 1980-Aug 1991