Enrico Fermi's first 4 articles on electromagnetism and relativity
 translated into English [plus related article 10]

Articles 1, 2, 3, 4c, 10 from The Collected Papers of Enrico Fermi.
Originals available at

Some of these documents still require some cosmetic editing which will never be done.

These and much more to appear in:

Einstein, Heisenberg, Fermi and Relativistic Astrophysics
R. Ruffini
World Scientific, Singapore, 2015->2021?
[this project started in 2002 as "Fermi and Astrophysics," so the end date is very uncertain]

Commentary on article 3 on Fermi coordinates and Fermi-Walker transport:

D. Bini and R.T. Jantzen
Proceedings of the Ninth ICRA Network Workshop on Fermi and Astrophysics, edited by V. Gurzadyan and R. Ruffini, World Scientific, Singapore, 2003:
Nuovo Cim. B 117B 983-1008 (2002) [http://arXiv.org/abs/gr-qc/0202085] [pdf]

 The historical origins of Fermi-Walker transport and Fermi coordinates and the construction of Fermi-Walker transported frames in black hole spacetimes are reviewed. For geodesics this reduces to parallel transport and these frames can be explicitly constructed using Killing-Yano tensors as shown by Marck. For accelerated or geodesic circular orbits in such spacetimes, both parallel and Fermi-Walker transported frames can be given, and allow one to study circular holonomy and related clock and spin transport effects. In particular the total angle of rotation that a spin vector undergoes around a closed loop can be expressed in a factored form, where each factor is due to a different relativistic effect, in contrast with the usual sum of terms decomposition. Finally the Thomas precession frequency is shown to be a special case of the simple relationship between the parallel transport and Fermi-Walker transport frequencies for stationary circular orbits.