Just as Atlas' Speed Carter: SpaceMan had a "future history"...
...so did the earlier Atlas space opera title, Space Squadron, as this tale about the first manned ICBM in 1961 (yes, 1961) demonstrates!
The writer and artist(s) of this tale from Space Squadron #3 (1951) are unknown.
The Famous Explorers of Space feature ran in all five issues of Space Squadron and the single issue of Space Worlds that used up material left homeless when Space Squadron was cancelled.
When Speed Carter: SpaceMan came along a couple of years later, writer Hank Chapman ignored everything done in Space Squadron, producing stories that often contradicted "history" established in the earlier series.