can you name any of its author?
Upton Sinclair
Pulp magazine
 Before he became a novelist, Upton Sinclair was turning out at least 8,000 words per day seven days a week for the pulps, keeping two stenographers fully employed.
what is referred as weird tales? American fantasy and horror fiction pulp magazine from where did this kind of magazine originate? UNANSWERABLE what are the genres of this last kind of magazine you mentioned? American Old West did it reach any height of popularity? Yes. At their peak of popularity in the 1920s-1940s, the most successful pulps could sell up to one million copies per issue
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Pulp magazine [SEP] Authors and editors
Before he became a novelist, Upton Sinclair was turning out at least 8,000 words per day seven days a week for the pulps, keeping two stenographers fully employed. Pulps would often have their authors use multiple pen names so that they could use multiple stories by the same person in one issue, or use a given author's stories in three or more successive issues, while still appearing to have varied content. One advantage pulps provided to authors was that they paid "upon acceptance" for material instead of on publication; since a story might be accepted months or even years before publication, to a working writer this was a crucial difference in cash flow.