Intel Arduino Schematics
Some links to make it easier to find the design information for these Intel boards.
Intel Galileo (Gen 2, July 2014)
Arduino IDE and form compatible board based on Intel Quark SoC X1000 processor.
Intel Galileo (Gen 1, Oct. 2013)
Arduino IDE and form compatible board based on Intel Quark SoC X1000 processor.
PCB Design Files (Cadence Allegro)