The characteristic and almost universal use of Grecian forms in domestic building, however, in many parts of the country continuing down to the Civil War of 1861-5, was the result of no foreign influence. Moreover, the Grecian details were not drawn by most architects and builders from the great basic treatise of Stuart and Revett, available in America only to a very few, but at second hand from the local Builders’ Guides[84] prepared by Haviland in Philadelphia, Asher Benjamin (1773-1845) in Boston, Minard Lafever (1798-1854) in New York, and various others. Such authors consciously Americanized what they borrowed from European sources in order to adapt Classical masonry forms to the ubiquitous wooden construction of the American countryside. There are two levels of Romantic Classicism in America. Work of the upper professional level is found chiefly in the big eastern cities where architects operated who were either themselves foreign-born and foreign-trained or else pupils and emulators of such. The lower vernacular level is more conspicuous in America than in Europe because it includes a much greater proportion of building production than in older countries, where so many structures of earlier periods remain extant. ‘Carpenter’s Grecian’, so to call it, represents the perhaps naïve, but culturally significant, determination of all who built to exploit, in some degree at least, the modern style of their day. The frontiersman in the Oregon of 1850 when raising a tavern in the Willamette Valley thus shared with the new and old royalties of Europe the satisfaction of architectural patronage. Moreover, like so many English gentlemen of the eighteenth century or such a nineteenth-century prince as Frederick William IV, he often took a hand at design himself. In this he was assisted by memories of the relatively settled towns he had left behind in the Middle West, themselves largely products of this period architecturally, and also by the Builders’ Guides issuing from the east in recurrent editions. It was not alone the transient patronage of a Corsican soldier, for a few brief years heir to Louis XIV and overlord of Europe, nor the Building Committee of an autocrat on the banks of the Neva controlling all public and private architecture in an Imperial capital for a quarter of a century, that really established Romantic Classicism as the last universal style before that of our own day. It is the fact that Boston architects and builders, when Quincy granite (that most perfect of Romantic Classical building materials) became readily available in the mid twenties, arrived at a rational sort of trabeated design as distinguished as Schinkel’s; while three thousand miles to the west, and a quarter of a century later, amateur builders working in wood produced almost the same sort of ‘pilastrades’, simplified well beyond the Americanized paradigms of Greek antae they found in the plates of Asher Benjamin’s books, as Schinkel had in Berlin.