William Carlos Williams was still struggling to find his audience at the time that he published Sour Grapes and he was forced to pay for some, if not all, of the publishing expenses himself. As a book, it is highly representative of Williams's early writing. The book is filled out with improvisational pieces that Williams seems to have thrown together in the spare moments that he stole from his medical practice. However, this poetic improvisation produced remarkable language, which is evident in "A Widow's Lament in Springtime". and "Complaint".