Three letters to James Dinwiddie from Margaret Henderson
One letter to James Dinwiddie, sender unknown
One letter to James Dinwiddie from Bernard Cologan
Queries and Hints vol. 10 #1722-1895
One letter to James Dinwiddie from Lt. Gen. Helvill
Queries and Hints on Fermentation #1-142
Two letter written by Phos Boyd to James Dinwiddie,
A letter from Alex Copland to James Dinwiddie
One letter to James Dinwiddie from Dr. Copeland
One letter fragment to James Dinwiddie from Mr Fitzroy
One letter to James Dinwiddie from R. Vevers
Queries and Hints vol. 11 #1896-1972
One letter to James Dinwiddie from Mr and Mrs Barclay
Queries and Hints vol. 12 #1973-2081
A letter written by Dinwiddie
Description of a Planetarium, or Astronomical Machine: which exhibits the most remarkable phaenomena, motions, and revolutions of the universe
A letter from Janet McNaught to William Kellock
Tibetan (?) manuscript with Chinese insert
Introduction
The Effects of Heat and Mixture on Bodies and Chemical Apparatus
Queries and Hints vol. 16 #2252-2360
A bill from Nicholas Meredith to James Dinwiddie
One letter to James Dinwiddie from Mr. Berney
One letter to James Dinwiddie from John Murray
Queries and Hints vol. 14 #2173-2232
One letter to James Dinwiddie from Mr. Jarding
Vitriolated Tartar/Nitre
Queries and Hints vol. 15 #2270-2251
A letter from James Emartz to James Dinwiddie
One letter to James Dinwiddie from Richard Clements
Letter to James Dinwiddie from J. Ingenhousz
One letter to James Dinwiddie from H Mowlray
Motion
Astronomy
Queries and Hints on Music #1-65
Credo Chinesa
Letters from Harry Robertson to James Dinwiddie
One letter to James Dinwiddie from the College of Fort William
Longitude by the Chronometer and Moon - Journal through China
Queries and Hints vol. 17 #2361-2455
Journal
Queries and Hints vol. 18 #2457-2508
Critical Prounouncing Dictionary
A letter from R. Hanna to James Dinwiddie
Journal
Journal
A letter from Victor Thibault to James Dinwiddie
A letter from Cylus Irwin to James Dinwiddie
A letter from William Scott to James Dinwiddie
Three financial documents