Sentence:  Pushkin's passage adumbrates the specific contents of Atravinsky's first and third tableaux, which suggests it may actually have helped guide the composer's imagination as he threaded his way among the songs in Kireyevsky's, Tereshchenko's, and Sakharov's immense <WSD>argosies</WSD> of wedding lore. 
Meaning of the word marked with <WSD> tags:  An abundant supply, boatload.