The Lensman series comprises of 8 books by E.E. 'Doc' Smith.
Although written before WWII, some of the technology he describes is virtually bang up-to-date, with just his descriptions differing to the modern variety.
They where the first SciFi books I read in the early '70s, and I've been hooked ever since.
I actually bought a complete set a couple of years ago, as well as audiobooks.
Others have tried to carry on with the series, but their writing is not a patch on the original.
Well worth reading. I've now read them three times.
Geoff – Now reading 'Great North Road'