G. W. & W. D. Hewitt was a prominent architectural firm in the eastern United States at the turn of the twentieth century. It was founded in Philadelphia in 1878, by brothers George Wattson Hewitt (1841–1916) and William Dempster Hewitt (1847–1924), both members of the American Institute of Architects. The firm specialized in churches, hotels and palatial residences, especially crenelated mansions such as Maybrook (1881), Druim Moir (1885–86) and Boldt Castle (1900–04). The last was built for George C. Boldt, owner of Philadelphia's Bellevue-Stratford Hotel (1902–04), G.W. & W.D. Hewitt's most well-known building.
George Hewitt worked in the office of John Notman, and became an expert on English ecclesiastical architecture. In 1867, he formed a partnership with John Fraser and Frank Furness, which lasted until 1871. The younger men formed their own firm, Furness & Hewitt, whose most notable building was the Pennsylvania Academy of the Fine Arts (1871–76). Louis Sullivan worked briefly as a draftsman for Furness & Hewitt (June – November 1873), and left descriptions of the Hewitt brothers (speaking of himself in third person as "Louis"):
George Hewitt [was] a slender, moustached person, pale and reserved, who seldom relaxed from pose. It was he who did the Victorian Gothic in its pantalettes, when a church building or something of the sort was on the board. With precision, as though he held his elements by pincers, he worked out the decorous sublimities of inanity, as per the English current magazines and other English sources. He was a clean draftsman, and believed implicitly that all that was good was English. Louis regarded him with admiration as a draftsman, and with mild contempt as a man who kept his nose in books.
But George Hewitt had a younger brother named John [sic], and John was foreman of the shop. He was a husky, smooth-faced fellow under thirty. Every feature in his clean cut, rather elongated face, bespoke intelligence and kindness, in fact a big heart. He had taken a fancy to Louis from the start. He was the 'practical man' and Louis ran to him for advice whenever he found himself in a tight place. John was patience itself and made everything clear with dainty sketches and explanatory notes. These drawings were beautiful and Louis frankly told him so. He begged John to teach him 'touch' and how to make such sketches, and especially how to 'indicate' so crisply. This John did. In fact, it was not long before he made of Louis a draftsman of the Upper crust, and Louis's heart went out to lovable John in sheer gratitude.
Writing a half century after the fact, Sullivan misremembered William Hewitt's name (there was no John Hewitt). Furness & Hewitt continued until 1875, and George opened his own firm, making his brother William a partner in 1878.
In the early 1880s, Henry H. Houston, a director of the Pennsylvania Railroad, began developing 3,000 acres (12 km2) in the western Chestnut Hill section of Philadelphia. The Hewitt brothers did the planning for the upper-class suburb and designed the principal buildings, including a resort hotel, the Wissahickon Inn (1883–84) (now Chestnut Hill Academy); the first clubhouse for the Philadelphia Cricket Club (1883–84, burned 1909); Houston's own mansion, Druim Moir (1886); and St. Martin-in-the-Fields Episcopal Church (1888). More than 100 Chestnut Hill houses were designed by the Hewitts.
Horace Trumbauer did his apprenticeship with the firm. Phineas Paist worked for the firm, and became a partner in it. Following George's 1907 retirement, the firm continued as Hewitt, Stevens & Paist.
- St. Peter's Episcopal Church of Germantown, 6000 Wayne Avenue, Philadelphia (1873)
- Providence Presbyterian Church at Bustleton, 2087 Old York Rd., Burlington, New Jersey (1878)
- Church of Saint John the Evangelist, 1720 Old Black Horse Pk., Runnemede, New Jersey (1880–81)
- Church of St. Martin-in-the-Fields, 8000 St. Martin's Ln., Chestnut Hill, Philadelphia (1888)
- St. Andrew's Church, 50 York St., Lambertville, New Jersey (1891)
- "Maybrook" (Henry C. Gibson mansion), Wynnewood, Pennsylvania (1881)
- Drexel Development Historic District, West Philadelphia (1883). Speculative rowhouses built for Anthony Joseph Drexel, on the block bounded by Pine, 39th, Baltimore, and 40th Streets.
- Edwin T. Coxe mansion, 280 W. Walnut Ln., Germantown, Philadelphia (1885)
- Houston-Sauveur house (Louis C. Sauveur house), 8205 Seminole Ave., Chestnut Hill, Philadelphia (1885)
- "Druim Moir" (Henry H. Houston mansion), Willow Grove Ave. & Cherokee St., Chestnut Hill, Philadelphia, (1885–86)
- "Brinkwood" (Samuel F. Houston mansion), Chestnut Hill, Philadelphia (1885–86)
- William Thompson Harris mansion, Highland & Bryn Mawr Aves., Cynwyd, Pennsylvania (1886)
- Spruce Hill speculative row, 4206-18 Spruce St., Philadelphia (1886)
- William C. Sharpless house, 5446 Wayne Ave., Germantown, Philadelphia (1886)
- Henry Lister Townsend house, 6015 Wayne Ave., Germantown, Philadelphia (1887).
- "Briar Crest" (William Henry Maule mansion), Villanova, Pennsylvania (pre-1897)
- Boldt Castle, Heart Island, Alexandria Bay, New York (1900–04)
- Music room addition to Horace Brock house, 1920 Spruce St., Philadelphia (1902–03), (now Helen Corning Warden Theater, Academy of Vocal Arts)
Hotels, businesses and institutional buildings
- Wissahickon Inn (now Chestnut Hill Academy), 500 W. Willow Grove Ave., Chestnut Hill, Philadelphia (1883–84)
- Philadelphia Cricket Club, 415 W. Willow Grove Ave., Chestnut Hill, Philadelphia (1883–84, burned 1909)
- Cornwall & Lebanon Railroad Station (C & L Depot), Lebanon, Pennsylvania (1885)
- Hahnemann Hospital, 15th & Race Sts., Philadelphia, PA (pre-1888, demolished)
- Kensington Branch, Philadelphia YWCA, Philadelphia (1891)
- Olympic Hotel, Blackwell Point, Tacoma, Washington (1891–93), (now Stadium High School)
- Receiving Ward, Episcopal Hospital, Front St. & Lehigh Ave., Philadelphia (1892–94, demolished)
- Wistar Institute, 3601 Spruce St., Philadelphia (1892–94)
- Philadelphia Bourse, 13 S. 5th St. (facing Independence Mall), Philadelphia (1893–95)
- Gibson Building, 1307-11 Market St., Philadelphia (1897, demolished)
- "The Castle" (Tau chapter of Psi Upsilon fraternity), University of Pennsylvania, 250 S. 36th St., Philadelphia (1897–99)
- Hahnemann Medical College, Broad & Race Sts., Philadelphia (pre-1899, demolished)
- Pitcairn Building, 1027-31 Arch St., Philadelphia (1901)
- Bellevue-Stratford Hotel, Broad & Walnut Sts., Philadelphia (1902–04)
Wissahickon Inn, Chestnut Hill, Philadelphia, Pennsylvania (1883–84). Now Chestnut Hill Academy.
Philadelphia Cricket Club (first building), Chestnut Hill, Philadelphia, Pennsylvania (1883–84, burned 1909).
Cornwall & Lebanon Railroad Station, Lebanon, Pennsylvania (1885).
"Druim Moir" (Henry H. Houston Mansion), Chestnut Hill, Philadelphia, (1885–86).
Olympic Hotel, Blackwell Point, Tacoma, Washington (1891–93). Now Stadium High School.
Wistar Institute, Philadelphia, Pennsylvania (1892–94).
Lobby of Bellevue-Stratford Hotel, Philadelphia, Pennsylvania (1902–04).
- David R. Contosta, Suburb in the City: Chestnut Hill, Philadelphia, 1850-1990 (Ohio State University Press, 1992)
- Louis Sullivan, Autobiography of an Idea (1924; reprint, New York: Dover, 1956), pp. 190-96.
- James B. Garrison, Houses of Philadelphia: Chestnut Hill and the Wissahickon Valley (New York: Acanthus Press, 2008) p. 295.
- Providence Presbyterian Church
- "St John's Church". Archived from the original on 2008-12-31. Retrieved 2008-11-30.
- St. Martin in the Fields
- St. Martin in the Fields from Bryn Mawr College
- St. Andrew's Church
- Maybrook photo from Lower Merion Historical Society
- Maybrook ballroom photo from Lower Merion Historical Society
- Maybrook history from Rich Men and Their Castles, Lower Merion Historical Society
- "National Historic Landmarks & National Register of Historic Places in Pennsylvania" (Searchable database). CRGIS: Cultural Resources Geographic Information System. Note: This includes Carl E. Doebley (February 1981). "National Register of Historic Places Inventory Nomination Form: Drexel Development Historic District" (PDF). Retrieved 2012-07-18.
- Coxe mansion at Bryn Mawr College
- Houston-Sauveur House at Historic American Buildings Survey
- Druim Moir from Bryn Mawr College
- Druim Moir from Bryn Mawr College
- Brinkwood from Philadelphia Architects and Buildings
- Harris mansion at Bryn Mawr College
- Spruce Hill from University City Historical Society
- Sharpless House from National Register of Historic Places
- Townsend house from Bryn Mawr College.
- Briar Crest from Philadelphia Architects and Buildings
- Boldt Castle — A "Gilded Age" estate built for a tragic love
- AVA Theater Frank Furness made earlier alterations to this house.
- Wissahickon Inn from Bryn Mawr College
- Wissahickon Inn at Historic American Buildings Survey
- Philadelphia Cricket Club from ExplorePAhistory.com
- Cornwall & Lebanon Station from Don Dorflinger
- Hahnemann Hospital from Philadelphia Architects and Buildings
- Kensington YWCA from National Register of Historic Places
- Stadium High School Archived January 2, 2015, at the Wayback Machine
- Episcopal Hospital from Historic American Buildings Survey.
- Philadelphia Bourse
- Gibson Building from Philadelphia Architects and Buildings
- The Castle
- Hahnemann Medical College from Philadelphia Architects and Buildings
- Pitcairn Building from Philadelphia Architects and Buildings
- Bellevue-Stratford Hotel
- Bellevue-Stratford Hotel at Historic American Buildings Survey
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