Hi Doug,
I talked to Jm Eakin at the NNGC and he plans to put out a booklet that is exclusively Davenport locos. It will be a compilation of the material that was previously combined with other manufacturers plus a lot of additional info he has collected. This loco should be in that publication.
A good friend of mine in the KC area is building a 1-1/2" scale model of the 4700N using these plans.