RR Auction wants “Godfather” fans to make them an offer they can’t refuse.

The Boston-based auction house last year acquired the archive of “Godfather” author and former Bay Shore resident Mario Puzo and is now selling the entire lot — 45 boxes filled with everything from a 744-page draft of the novel (originally titled “Mafia”) to Puzo’s 1965 Olympia typewriter — as one package.

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“It just seemed like it only really made sense to sell it as one complete entity,” says Robert Livingston, executive vice president of RR Auction, who expects the collection to fetch in excess of $400,000.

Though manuscripts from Puzo’s other novels and his screenplays for “Earthquake” (1974) and “Superman” (1978) are included, the “Godfather” — like the cream in cannoli — is the archive’s sweet spot. Among the gems are nine “Godfather” scripts featuring handwritten notes by Puzo; six storyboards outlining the nine-section novel; Puzo’s correspondence with director Francis Ford Coppola and actor Marlon Brando; and Puzo’s copy of Coppola’s “Bible,” which covers every aspect of production on all three “Godfather” films. Most illuminating, Livingston says, is a 15-page handwritten outline for Puzo’s best-seller, which makes it clear that the character of singer Johnny Fontane was based on Frank Sinatra.

Online bidding takes place Feb. 11 through Feb. 18 at 6 p.m., rrauction.com, followed by the live auction at 7 p.m.