Looking for billboards and ads for your modern era layout?  Look no further than Facebook.  You don't even have to be a member of Facebook or "like" a company to access their page.  You’ll find that most businesses have a page with a wealth of ads that can be easily downloaded with a simple right click.  Often their "cover photos" at the top are perfectly shaped for an HO billboard.  Be sure to check out car companies, clothing stores, and candy companies to get started.

For those of you who have noticed the "Adding Rust Piles to your Layout" entry, I have another tip which happens to be my personal favorite because it is absolutely free and offers the most bang for your anti-buck.

Does anybody have a cehap recommended airbrush for custom painting I want to try some custom painting but failed with a brush.