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
One letter to James Dinwiddie from Mr Custer
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
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
One letter to James Dinwiddie from Lt. Gen. Helvill
Three letters to James Dinwiddie from Margaret Henderson
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
Seventeen letters to James Dinwiddie from Logan Henderson
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
One letter to James Dinwiddie from J.S. Ewart
One letter to James Dinwiddie from Andrew Mitchell
One letter to James Dinwiddie from William Steven
Two letters to James Dinwiddie from Herbert Jenkins
One letter to James Dinwiddie, sender unknown
One letter to James Dinwiddie from Bernard Cologan
Queries and Hints vol. 10 #1722-1895
A letter from Margaret Kertland, to James Dinwiddie
One letter to James Dinwiddie from H.B.T.
One letter to James Dinwiddie, sender unknown,
Queries and Hints vol. 9 #1287-1721
A letter from Harry Robertson to James Dinwiddie
One letter to James Dinwiddie from Dr Blacklock
One letter to W.H. Stevenson from A. Neilson
Five letters to James Dinwiddie from W. Hart Stevenson
Journal
One letter to James Dinwiddie from Robert Blair
Queries and Hints vol. 6 #795-1000
One letter to James Dinwiddie from William Blanta Esq.
One letter to James Dinwiddie from William Crumbie
One letter to James Dinwiddie from James Carmichael
One letter to James Dinwiddie from John Wood
Queries and Hints vol. 5 #728-794
Queries and Hints vol. 4 #614-727