Carter Brown, Dennis Sinclair
According to Wikipedia: "Born in England, Alan Yates married and settled in Australia in 1948. He began his working life as a film technician, a salesman and in public relations for Qantas before taking up writing full-time.
Yates soon became a literary phenomenon. He wrote westerns under the pseudonym Todd Conway, and science fiction under Paul Valdez. He even found the time to write books under various versions of his own name as well as other pseudonyms, Dennis Sinclair and Sinclair MacKellar. But it was his pseudonym Peter Carter Brown then later, Carter Brown ('Peter' was dropped for the US market) who was to become the international best-selling pulp fiction author.
The extraordinary early success of Carter Brown in the 1950s meant that Yates was contracted to produce one short novel and two long novels each month. In reality, Yates was truly prolific with 322 published Carter Brown novels, including multiple series variously featuring protagonists Mike Farrell, Andy Kane, Mavis Seidlitz, Lt. Al Wheeler, Rick Holman, Danny Boyd, Larry Baker, Zelda Roxanne, et al. Yet despite the enormity of his output, a 1963 profile in Pix magazine revealed he approached deadlines 'with the reluctance of a long-distance swimmer shivering on the brink of a cold, grey English Channel. In the manic depressive moments of the third night without sleep – when the deadline is long past and the mental block has set solid as concrete, the writer inevitably descends into self-analysis. He knows, of course, that it will be no more help than the last Dexedrine tablet but still clings to the naïve hope that, somehow, sometime, he will find a way of avoiding the recurrence of his present hopeless situation.’"