Tommygun is a name I came across via Warseer. His paper-craft terrain output is prodigious and it is great to see how he has honed and continues to hone his skills, both with textures, but the construction side of his free paper-craft offerings. His site features something for everyone from the recent past, modern/contemporary and near-future eras. well worth a look and donation if you find a number of useful items.
His stuff can be found: here.