The collection includes 160 manuscripts the prolific romance novelist left behind when she died 13 years ago.
Branded The Pink Collection, 103 of those works have already been made available via the author’s website.
Publisher M-Y Books has worked with her son Ian McCorquodale to “expand the reach” of the collection.
It will be accompanied by The Eternal Collection, made up of dozens of existing titles, and a Spanish language collection.
All of the novels will be made available as e-books, with paperback editions printed on-demand.
Jonathan Miller, managing director of M-Y Books, said: “Barbara Cartland is a unique author known worldwide for her pure romance writing and novels that are perfect for family reading.”