I would like to renew the call for an example of Einstein's work that uses or supports a FE. So far all that has been cited is some vague talk of Aether, which does not support any earth shape and a misinterpretation of the equivalence principle, which although shoe-horned in to justifying UA does not show that Einstein was supporting a FE or using it in his thought experiments.
I would be interested into seeing what else is out there.