William J. Brennan, Jr., Railway Express Agency v. Virginia…
“ It seems to me doubtful whether this makes a significant alteration in the demonstration the Court made on the prior appeal with respect to the status as a property tax of the gross receipts tax on express companies. While the tax may be a rough equivalent of some sort of property tax that Virginia might conceivably levy on express companies, I do not see that it has been made clear that it bears any equivalence to any sort of property tax that she in fact levies on other sorts of businesses or has in fact previously levied on express companies. ”
