If any of you are diving into the JSA stories from the Golden Age, you may notice that there is a gap currently in the original run.
#39-49 and 52-53 are currently unavailable.
A couple of them were reprinted in other comics that ARE available.
#40 - “The Plight of a Nation” can be found in Justice League of America (1960) #110
#41 - “The Case of the Patriotic Crimes” can be found in Justice League of America (1960) #113