3.7 inch Mountain Howitzer

[Story]

Hi guys,
Greetings from the big Sandy.
I'm attempting a restoration project and am searching for digital or paper copies of any of the following manuals for the QF 3.7" Mk 1 Mountain Howitzer:

Gun Drill:
26/Manuals/1391 QF 3.7-inch Mk 1 Howitzer on Mks 1 - 3R Carriage, 1934.
26/Manuals/1664 QF 3.7-inch Mk 1 Howitzer on Mk 4 Carriage (Provisional), 1936.
26/GS Pubs/432 QF 3.7-inch Mk 1 Howitzer on Mks 1 - 3R Carriage, 1941.
26/GS Pubs/432 QF 3.7-inch Mk 1 Howitzer on Mk 4P Carriage, 1941.
Handbook:
26/Manuals/469 QF 3.7-inch Howitzer Mk 1 on Mks 1, 2 & 3 Carriage, 1930.
26/Manuals/1738 QF 3.7-inch Howitzer Mk 1 on Carriage 3.7-inch Howitzer Mks 1, 2, 3 & 4P, 1939.
Maintenance Manual:
WO Code 1450 3.7-inch Howitzer, Ordnance QF Mks 1, 1/1, 1/2 and 3 on Carriage Mks 1/1, 2/1, 2P, 3/1 and Mks 2, 2/1 Indian, 1946.

Yes, the breechblock appears to be intact.
Thanks in advance for any pointers, all.
And thanks for greasing the skids on my approval, Geoff!