Skylark Three is a science fiction novel and space opera by American author E. E. ”Doc” Smith. It was first published in 1930.

Skylark Three is the second novel in the Skylark series. Originally serialized through the Amazing Stories magazine in 1930, it was first collected in book form in 1948.

The novel concerns Richard Seaton and his allies who have encounters with aliens while fighting DuQuesne and the Fenachrone..(Introduction by wikipedia)

Skylark Three is the second book in the Skylark series and is set a year after the events of The Skylark of Space, during which year antagonist Marc "Blackie" DuQuesne has used the wealth obtained in the previous book to buy a controlling interest in the story's 'World Steel Corporation', a large company known for its ruthless attitude.

This is the serialized version from Amazing Stories in August, September and October 1930.

Edward Elmer Smith (also E. E. Smith or E. E. "Doc" Smith; 1890-1965) was an American food engineer (specializing in doughnut and pastry mixes) and an early science-fiction author, best known for the Lensman and Skylark series. Smith's novels are generally considered to be classic space operas, and he is sometimes called the first of the three "novas" of 20th-century science fiction (with Stanley G. Weinbaum and Robert A. Heinlein as the second and third novas).