See first quotes from Benson Herbert
2 Quotations from Benson Herbert
|parallel world n.
||1931 World Within in Wonder Stories Aug. 313/1
The disconcerting change of direction of gravity, catching him unawares while passing along the fourth dimension from that tri-dimensional parallel world so near to ours, together with the sudden enormous increase of his weight, proved too much for his weakened condition.
||1935 Perfect World in Wonder Stories Oct. 522/1
On the desk there was a copy of The Weekly Rocketeer, yesterday’s issue. It was a trade magazine, cost one and a half marks, and was full of advertisements for soarers, metal hulls, rocket-tubes, external-combustion engines, fuel mixtures, and so on.