You know, I think we need some ground rules here. 8)

I mean, R.A.H. was my favorite author. Really. Finding SR sitings in an R.A.H. novel is not much of a challenge. Heck, he's got a re-occuring character _named_ "Slipstick".

Generally having a SR siting in pre 1970 SF just isn't very challenging.

It can be rather amusing, the assumption that SRs would continue in the future. A good example was a Jack Vance novel with the protaginist calculating his hyperjumps on a slide rule. 8)