First of all: I'm very sorry for my English language. I apologize.
"Games Paper Models Studio", or GPMS, shares for free its previous commercial products.
Eleven great models imho ( plus two little print&play games ). Two american old west sets, three medieval ( or fantasy ) sets and six military sci-fi models. They are in "catalogue" section.
http://www.gamespapermodelstudio.com/decors-sci-fi
http://www.gamespapermodelstudio.com/decors-med-fan