Abacom sells low cost software for designing and printing PCB layouts.

This tutorial lists circuit board software.

Artwork for many QST Projects can be found on the QST-in-Depth and QST Binaries web pages.

Artwork for QEX files can be found on the QEXfiles page.

Progressive Receiver PC Layouts--popular design by Wes Hayward W7ZOI and K5IRK John Lawson.

Far Circuits provides circuit boards for many ham radio projects.

Express PCB can provide inexpensive circuit boards if you use their software to lay out the boards.

"Build a Custom Circuit Board"
IEEE article on using software provided by a PCB supplier