[Hallicrafters] Replacement caps

[W3HKK at aol.com]

Im restoring my old S-76 receiver and looking for a good  single mail order 
source for the typical  capacitors  that need to be  replaced ( wax, black 
beauties) that have   the proper voltage  rating.  600v?
 
Which type caps should I look to buy to replace the  above two types?  Ive 
heard orange drops mentioned but have not seen  one.  Note:   Some of the old 
caps are rated at 600 Volts but most  newer ones are only 50V. 
 
I'd like to have caps where  both the mfd, and voltage  rating are  stamped 
on the body.
 
Suggestions would be appreciated.
 
Bob