As far as eagle files, not sure, but theoretically you could recreate the Briel Replica 1 as it's schematic is published AFAIK. I built a Briel replica 1 plus, as the parts bundle and PCB for a true Apple 1 replica I just can't justify. It's functionally solid, and though the video terminal section is done differently, this matters only to the most serious of developers which is like... 2 people? Mine has a P-Lab SD card expansion as well which makes the machine feel much more mature (backspace support, a command line that isn't wozmon or assembler, fast loading of programs).
Whether you build Vince Briels clone or not his documents and schematics should be very useful for you, unless you're going for a full accurate clone in which case I wish you luck in your IC hunt.