I have a 1949 house, with 2-prong outlets and 2-wire system (no ground, even after opening the wrapping to check). All circuits are 20 amp, the panel is good. Also for safety I am checking for cracked rubber, and using shrink tube if any is exposed.

Question: I want to upgrade some or all of my outlets to a 3-prong outlet. I installed 20 amp GFCI's where I needed these per the NEC(2-wire, no ground). If I install a 20 amp GFCI on the first outlet of a circuit, and supply the remaining outlets with the LOAD side... can I install regular 15 amp 3-prong outlets for the rest in the same circuit? And label them "No Equipment Ground" and "GFI Protected"?