The Immaculate Conception (El Greco, Toledo) in his artistic career; between the years of 1581 and 1585. As such, the demand for devotional works by El Greco’s patrons escalated rapidly. His customers were able to choose from a few samples, often smaller versions of his works, which he would then alter to suit their preferences. El Greco later became the master of a workshop which dealt with the creation of architectural or framing devices for cathedrals. These years of 1597 - 1607 were a profitable decade for him and his workshop, yielding several commissions and outputs. Despite staying in Toledo, this granted El Greco significant projects
Posthumous fame of El Greco article to El Greco with engravings of four works. In this article, Lefort extols El Greco, refuting the all-powerful commonplace of his "madness" and proclaiming him the founder of the Spanish School. Between 1860–1880 the archival research reveals some new important documents, such as a letter written by the Croatian miniaturist, Giulio Clovio, who characterized El Greco as "a rare talent in painting". In the 1890s, Spanish painters living in Paris adopted him as their guide and mentor. During this period, however, El Greco continued to still be a matter for the "happy few". Lefort was opposed to distinguished critics