I have the following Royal Artillery and Canadian Artillery unit histories and would be happy to do lookups as time permits:
Divisional Artilleries
Narrative of the 5th Divisional Artillery, 1914-1918
History of the 20th Divisional Artillery, 1914-1919
29th Divisional Artillery War Record and Honours Book 1915-1918
Brief History of 31st Divisional Artillery (officers only listed)
History of the 33rd Divisional Artillery in the War, 1914-1918
A Short History of the 39th (Deptford) Divisional Artillery 1915-1918
War Services of the 62nd West Riding Divisional Artillery
Royal Field Artillery Brigades
The War History of the 1st Northumbrian Brigade, RFA TF
War Diary of the 1st West Lancashire Brigade, RFA
A Short History of the 1st West Lancashire Artillery Brigade
Kamp News, 1915-1918 (3rd West Lancashire Brigade, RFA TF
Hertfordshire Yeomanry and Artillery Honours and Awards (4 E Anglican Bde, RFA TF)
Lewisham Gunners (4th Lond Howitzer Bde, RFA)
London Gunners Come to Town (5, 6, 7, and 8 London Brigades, RFA TF)
Short Record of War Services of the 7th London Brigade, RFA TF
25th Brigade Ammunition Column War Diary (1914)
Roll of Honour and Casualties and List of Officers who have served with 75th Brigade, RFA, 24
August to 11 November 1918.
Push and Return Push (82 Brigade, RFA
The Raising of the 157th Brigade (City of Aberdeen), RFA TF
The History of the Locally Raised 160th Wearside Brigade, Royal Field Artillery
Exploits and Escapades, Brief History of happenings of the 3rd Staffs Battery, RFA
Before the Echoes Die Away (242 Bde, RFA, 5th Warsickshire (How) Battery)
The Story of the Monmouthshire Volunteer Artillery (266 Bde, RFA TF)
Diex Aix: God Help Us (9 Divisional Ammunition Column, RFA)
Royal Field Artillery Batteries
2nd City of Edinburgh Battery, RFA, 1914-1918
Record of the 3rd Devonshire Battery (Tavistock), 4th Wessex Bde, RFA TF, The Great War,
1914-1919
Third Durham Volunteer Artillery (4th Durham Battery, RFA TF)
The Battery Book (1/6 Hants Battery, RFA TF)
The History of Strange’s Battery, Royal Artillery (8th Battery, RFA)
27th Battery, RFA, 1914-1919
The History of A Battery, 84th Brigade, RFA 1914-1919
Field Guns in France (D/151; A/150 Batteries, RFA)
The Long March, Story of “The Devils Own”, B/210 Burnley Battery, RFA 1914-1919
Over There, Commemorative History of the Old Leak Battery, 1908-1919 (C/231, RFA)
An Australian in the RFA (D/242, RFA
A Record of D245 Battery, 1914-1919
History of the Yarmouth Battery, 1569-1926 (A/270, A/264, A/272 Batteries, RFA)Romford to
Beirut via France, Egypt and Jericho (B/271, RFA)
Royal Horse Artillery Brigades and Batteries
History of the 1/1st Hants Royal Horse Artillery during the Great War, 1914-1919
Shropshire Royal Horse Artillery, 1912-1918
The War Diary of “E” Battery, Royal Horse Artillery, 5th Aug. 1914-31st Oct. 1919
The Story of “F” Troop, Royal Horse Artillery (F Bty, RHA)
Some Pages from the History of “Q” Battery, RHA in the Great War
Royal Garrison Artillery Brigades
The 25th Army Brigade, RGA on the Western Front in 1918
61, How Some Wheels Went Round (61 Heavy Artillery Group, RGA)
History of the 77th Bde, RGA, France 1916-19
Nine Days: Adventures of a Heavy Artillery Brigade of the Third Army during the German
Offensive of March 21-29, 1918 (90 Brigade, RGA)
Heavy Batteries, RGA
9 Heavy Battery, RGA, 1914-1919
War Diary and Roll of Honour, 14th Heavy Battery, RGA in France, Belgium, Germany
With the Heavies in Flanders (24 Heavy Battery, RGA)
Dads Diary, A Gunners Experience in War, 1914-1918 (121 Heavy Battery, RGA)
126 Heavy Battery, RGA, 1915-1919
The Hampstead Heavies (138 Heavy Battery, RGA)
Diary of 144th (York) Heavy Battery, RGA, 1915-1919
Siege Batteries, RGA
The Eleventh Siege Battery, RGA, 1914-1918
Notes of History of 19th Siege Battery, RGA
20th Siege Battery, RGA, BEF, France and Flanders, 20th June 1915-11th November 1918
27th Siege Battery, RGA, BEF, France and Flanders, 5 Sept 1915 to 15 Apr 1919.
Memoirs of 42 Siege Battery, RGA, 1914-1918
52 Siege Battery, RGA, August 1915-August 1919
A Short History of the 72nd (South African) Siege Battery
The History of 76 Siege Battery, RGA
History of 81 Siege Battery, RGA
History of the 91st (Siege) Battery, RGA, December 1915 to 11 November 1918
Siege Battery 94 During the World War, 1914-1918
Occasional Gunfire, Private War Diary of a Siege Gunner (118 Siege Battery, RGA)
126th Heavy Battery, RGA 1915-1919
History of the 135th Siege Battery, RGA
144th Siege Battery, R. G. A.
A History of 154 Siege Battery, RGA, France 1916-19
Nominal Roll of 170th Siege Battery, RGA
178 Siege Battery, R. G. A., B. E. F. France
“Two Eleven,” Being the History of 211 Siege Battery, R. G. A. on the Western Front
220th Siege Battery, R. G. A.
“228”, The History of a Siege Battery during the Great War
History of 250 Siege Battery, R.G.A.
With a Siege Battery in France, 303 Siege Battery, RGA
London Gunners (309 (Hon Arty Co) Siege Battery, RGA)
The Honourable Artillery Company in the Great War
332 Siege Battery, R.G.A.
The Record of 355 Siege Battery
A Short Record of the 359th Siege Battery RGA
Canadian Field Artillery
Gun-Fire, An Historical Narrative of the 4th Brigade, CFA
NREF, 16th Brigade, C.F.A.
The Battery, The History of 10th (St. Catherines) Field Battery, RCA (10 Bty, CFA)
The Diary of the 13th Battery, Canadian Field Artillery 1914-1919
Battery Action! The Story of the 43rd Battery, CFA
The History of the Fifty-Fifth Battery, CFA
The 60th C. F. A. Battery Book, 1916-1919
The Story of the Sixty-Sixth C. F. A. (66 Bty, CFA)
Second Canadian Divisional Ammunition Column and Its Part in the Great World War
Canadian Siege Artillery
The Seventh (7 Siege Battery, CGA)
War Diary, 10th Canadian Siege Battery, 1917-1919