- letter to Orion Clemens.
Philadelphia - 26 October 1853
a young sam clemens writes to brother describing interesting details of philadelphia
- letter to Orion Clemens.
Philadelphia - 28 November 1853
sam clemens writes to brother orion about work in philadelphia
- letter to Orion Clemens.
Saint Louis, MS - 9 March 1858
sam clemens writes to brother orion about being a young pilot on the missouri river
- letter to Orion Clemens.
St Louis, MO - 15 June 1859
sam clemens tells of how life has changed after becoming a full pilot on the missouri river
- letter to Orion Clemens.
St Louis, MO - 15 March 1860
sam clemens newsy letter to brother orion about events with sister and mother
- letter to Orion Clemens.
New Orleans, LA - 28 September 1860
sam clemens quick note to brother orion from new orleans
- letter to Orion Clemens.
New Orleans, LA - 6 February 1862
sam clemens writes to orion of his visit to a clairvoyant
- letter to Orion Clemens.
Esmeralda, NV - 13 April 1862
sam clemens writes brother orion a rather disheartened letter concerning their mining interests
- letter to Orion Clemens.
Esmeralda, NV - 11 May 1862
sam clemens writes brother orion an exultant letter concerning their mining interests
- letter to Orion Clemens.
Esmeralda, NV - 20 May 1862
sam clemens writes another in a long string of letters about shared mining interests with bother orion
- letter to Orion Clemens.
Esmeralda, NV - 1 June 1862
extract from sam clemens letter to brother orion about trouble at a mine he was working
- letter to Orion Clemens.
Esmeralda, NV - 15 June 1862
extract from sam clemens letter to brother orion mining interest - date uncertain
- letter to Orion Clemens.
Esmeralda, NV - 30 June 1862
sam clemens writes brother orion about mining interests
- letter to Orion Clemens.
Esmeralda, NV - 23 July 1862
sam clemens writes to orion about mining interests and possibility of writing for a sacramento paper
- letter to Orion Clemens.
Esmeralda, CA - 7 August 1862
sam clemens considers quitting the mining business and accepting a staff position on a newspaper
