[KineticLensman]

Ah yes, probably need to re-read them. I remember how virtually every book introduces a new super weapon that becomes part of the standard arsenal in the next, all the way up to entire 'negative matter' planets that are fired out of subspace (can't recall the in-universe name) at the planets hosting your opponent's base.

[PaulHoule]

These are all on the Canadian Gutenberg.

[KineticLensman]

Thanks! They are also in a box in my loft along with lots of other classics. :-)