About the Collection
Materials include thirty-three letters written from de Lalande to Mme. de Piery discussing his work, the current political situation, and personal matters. Portions of three letters have been excised, possibly because of their political content. Some items are not dated, others are dated using the calendar adopted by the French following the Revolution (1789-1792) with no attempt to correlate these dates with the Gregorian calendar. All items handwritten, some signed. All but one enclosed in a contemporary paper folder with a summary of the contents and the date of the letter written on the outside. Dated 1779-1806.