talking about all DC golden age (GA)...yes...super hero I have probably or could own 100% in a day (to buy issues I haven't owned, but are available)
here are the runs I have or have already had
Tec 1-3, 5,8, 18, 27 up
Action 1 up
Batman 1 up
superman 1 up
Wonder woman 1-80
Sensation 1-106
Flash 1-104
New Fun 1-6
Green Lantern 1-36
New comics 1
Adventure 40 -75 (1 or 2 I haven't owned yet)
More fun 52 -101 (quite a few I haven't owned in there, but all 52-80 or so)
all american 16-25, and most 40 up
funny stuff 1-79
funny folk 1 up
world's finest 1 up
all star 1-56
these are the runs I would have to work on, as I have never owned "complete" runs, but often times many within
Mutt and Jeff(never owned any)
Movie Comics (never owned any)
Picture Stories from the Bible (never owned any)
Real Fact Comics (owned some)
All Funny Comics (never owned any)
Buzzy (never owned any)
Animal Antics (owned a couple)
Double Action Comics (although I technically co owned one for a day )
Real Screen Comics (never owned any)
Star Spangled Comics (owned most, not all)
Leading Comics (owned many, not all)
Comic Cavalcade (owned most all)
boy commandos (about 1/2 of the 36)
All-Flash (owned most all)
More fun 51 down
Adventure 39 down
what else am I missing?