Resources
Organization
Recommended Dojo
Capital Aikikai (Silver Spring, MD)
Valley Aikido (Phoenix, AZ)
Allegheny Aikikai (Altoona, PA)
Western Maryland Aikikai (Hagarstown, MD)
Albany Aikido (Albany, NY)
Reference
The History of Aikido in Hawaii (highly recommend)
Transmission, Inheritance, Emulation by Peter Goldsbury (exhaustive and highly important research)
Aikido Sangenkai Blog (Chris Li, research and translations)
Nakaima (Jamie Yugawa'a blog on Hawaiian Aikido history)