From Yahoo!: "Unique Kierkegaard book on auction after 150-year search":
A book by Danish philosopher Søren Kierkegaard, featuring a handwritten dedication to Denmark's famed storyteller Hans Christian Andersen, is to be sold at auction after a 150-year search around the globe.
Newspaper Jyllands-Posten said the dedication in Either/Or was the only hard evidence of direct contact between two of Denmark's biggest literary figures, and described the sale of the highly sought-after copy as a cultural and historic sensation.
Jyllands-Posten itself goes on to say:
Although Søren Kierkegaard and Hans Christian Andersen were contemporaries - most likely rubbing shoulders in Copenhagen's intellectual circles during Denmark's Golden Age of the 1840s - their relationship had been merely speculative. At least until the discovery of the book.
Several years ago, scholars had discovered an effusive 'thank you' letter signed by Andersen among Kierkegaard's papers, but the book itself remained elusive.