Landships II

Hello,

I've been trying to gather as much information as I can on the M1916 37mm Infantry Gun.  Particularly I'm looking for plans, photos, and dimensions for use in constructing a full-size replica for a nearby living-history museum.  I'm familiar with the excellent article on Landships here. 

I have found a few plans in a manual at the "US Army Heritage Collection OnLine" here.  This site has a very good collection of early 20th Century military manuals with many plans and photos of a wide variety of equipment, but apparantly does not have the "Training Regulations" or "Ordnance Catalog" (sometimes spelled "catalogue") series of manuals where part-by-part plans and diagrams would likely be found. 

Are any forum members aware of an online source for US Army "Training Regulations" or "Ordnance Catalog" manuals?

Thank you,

MarkV