For your colonial America miniature wargames, here’s a paper model of an Iroquois longhouse. It’s a pdf file and in black and white, so you’ll have to color it yourself. Watercolors should do a good job with this.
The Miniature Wargaming Editor
Warhammer 40K Chaos Warhound Titan Paper Model
Given the absurd prices on Warhammer 40K Titan models, this paper model of a Warhammer 40K Chaos Warhound Titan may be just what you needed.
Spectre Modern Operations Rules
Spectre Miniatures offers a set of free wargames rules for modern operations called Spectre. Click on the “rules” tab at the top of the page.
There’s also a line of 28mm miniatures that you can buy, if you don’t already have some. I’ve got moderns in 15mm already.
The Battle of Blackburn’s Ford
The Battle of Blackburn’s Ford is an introduction to the Combat Command American Civil War Rules. The pdf also includes counters if you don’t have figures.
Country Houses Card Game
Country Houses is a DIY card game in which players are 19th century landowners.