Sunday Meskin Measures.
Here is the Third installment in my complete representation of the General Electric information series, Adventure in Your Past from 1949. I am using my own scans and those of the Digital Comics Museum to do this. In fact, although this is one of the books I have myself, I used the DCM's scans for this post. I did not see that they had binder holes in their scans so I may have to do my own and sent it to them (and replace it here).
For this story, George Roussos seems to have used the pencils of his collegue Harry Anderson, a much more detatailed artist than Roussos was. The combination works and it is considered one of the more desirable issues. No Mort Meskin, as far as I can see.