1) 21 May 1874 from Paris to ‘Madame et très-digne amie’, noting ‘le succès de nos démarches’; noting the accident from which Adelaide de Montgolfier has now recovered; and extending his regards to M et Mme Ballot [daughter and son-in-law of L S B];
2) 23 August 1878 from St Césaire, near Grasse, Alpes-Maritimes, to ‘Chère Madame’ [possibly to one of L S B’s daughters concerning L S B?? (the latter having been ill)] (this letter also has an additional note written in a different hand).