On Tuesday, some collectibles from the personal homes of Stephen Sondheim, the legendary Broadway composer and lyricist, surprised even Sondheim die-hards when the rarities netted sky-high bids at a New York auction. Instead, the two lots that, per the auction house’s website, “drew loud gasps from the audience,” were two sets of books—thesauruses and dictionaries, to be exact. Peter Costanzo: …