Worcester replied, "No, not many." Accusation became attack in 1834, the Worcester, Massachusetts-based Palladium published an article that called Worcester's book "a gross plagiarism" and stated that its author "pilfer[ed] the products of the mind, as readily as... the common thief." Webster later published an open letter to Worcester in the Palladium dated January 25, 1835, accusing Worcester of stealing the definitions of 121 words, claiming their definitions were not published in any other dictionary and challenging Worcester to prove otherwise. Worcester responded saying that the burden of proof fell on Webster but provided his sources anyway. In what is often referred to as the "dictionary wars", rivalry and contention between the two dictionaries continued beyond Webster's death in 1843, and long after with Webster's successor, the G. & C. Merriam Company, which bought rights to the American Dictionary. Worcester continued to revise his dictionary, producing A Universal and Critical Dictionary of the English Language in 1846. When a British edition of the work stated that it was based on the work of Noah Webster, and omitted Worcester's introductory statement claiming otherwise, he responded with "A Gross Literary Fraud Exposed". In 1860, Worcester published A Dictionary of the English Language, a substantially revised and expanded work which was soon recognized as a major English language dictionary. The first copies were electrotype printed at the Boston Stereotype Foundry. The dictionary featured numerous illustrations throughout the text, a relatively new innovation. However, Worcester's work was not technically the first American dictionary to feature illustrations. Having heard about the plans for Worcester's new edition, Webster's publishers, George and Charles Merriam, rushed to put out a similar work. They managed to publish a Pictorial Edition of Webster's American Dictionary in 1859. The Pictorial Edition was basically a reprint of the 1847 American Dictionary, with engravings taken from the Imperial Dictionary of the English Language. More competition arrived in the form of the Merriam's revised edition of Webster's American Dictionary, which appeared in 1864. Worcester's dictionary was posthumously revised in 1886, but was eclipsed by Webster's International and other dictionaries of the 1890s. Marriage and family In 1841 he married Amy Elizabeth McKean; the couple had no children. McKean, daughter of the founder of Harvard College's Porcellian Club, had previously served as a teacher after taking over the post of Sophia Ripley. Around this time, Worcester was living in the Craigie House in Cambridge, Massachusetts,