Catalogue No. 12, J.L. Lewis Cameras & Supplies, (New York, NY), undated c. 1910, ~5"x7½", 80pp
A few cameras in this catalog admit to manufacturer (e.g., Ansco), but many are purchased from an un-named manufacturer, then given the house brand descriptor National. For the two field view cameras, the New Improved National View is identical to the Improved Seneca View, and the Professional Camera is identical to the Seneca Competitor View.