1982 National Register of Historic Places Inventory for Colonial Germantown Historic District:
"(SWC Walnut Lane) Wyck, the Haines House, western section built c. 1730; eastern section built c. 1700 and passageway between sections enclosed before 1775; extensively altered 1824, William Strickland, architect; west wing built before 1845, two and one-half stories, stucco on stone with wood trim. Webster sites Wyck as the oldest extant house in Germantown. It also served as a British field hospital in the Battle of Germantown. (Webster, p. 279 and Lloyd). --- Significant."

Additional Sources:

• GHS: Box 11, envelope 5: "Wyck, from Main St" (photograph of original wash and ink drawing in John Richards' sketchbook, p. 22).

• GHS: Handsome Homes of Germantown, Chestnut Hill, Mt. Airy & Pelham (Germantown: Independent-Gazette, 1899), p. 29: 'Wyck', Haines House, Corner Main Street and Walnut Lane" (photograph).

• GHS: Jellett, Edwin C. "Germantown Historical Miscellany," pp. 305-317 (images and text).

• GHS: Keyser, Naaman. Notes for v. 2 (north of Chelten), History of Old Germantown, pp. 38-40: "5933" (unpublished typewritten manuscript).

• GHS: Photo Box 1, pp. 11-13 (photographs of door, garden and interiork by Reuben Haines, 1904).

• GHS: Photo Scrapbook 6 "Germantowne 100 Years Ago" (1955), compiled and presented by Blanche Day: nos. 54 and 55 (two photographs of Wyck and its gardens).

• HSP: Campbell Collection, vol. 33, pp. 194-202: Wyck (photographs, postcards and text).

• HSP: Mutual/Green Tree Insurance Policy 12911 for Robert B. Haines, Wyck, 6026 Germantown Avenue.

• HSP: Perkins Collection, vol. 61D, pp. 66, 68, and 78 Wyck no. 6026 (manuscript text and photographic images of Wyck and its barn, before and after Fielding converted it into a home).

• HSP: Photo Collection, Box 43, Folder 3 Germantown Residences: "Wyck (1690) 6026 Germantown Ave" (photograph of main house viewed in the winter from the west with Blair-Button-Deaver House visible in the background across Germantown Avenue).

• HSP: Richards, John. Old Landmarks in Germantown and Vicinity (wash and ink drawings):
  • 29c: "Reuben Haines House, built by Dirk Johnson 1700" (house viewed from the street, including man with a cane and woman with a dog)
  • 30b: "Wyck"(front view).

• HSP: Shoemaker Collection, folios 10 and 18: Wyck (newsclippings, manuscript text, woodcuts, 1913 pamphlet, 1912 photo by Ph B Wallace).

• HSP: Society Print Collection, Wyck (6026 Germantown Avenue) Historic American Buildings Survey (22 pages include site and floor plans, detailed drawings of woodwork, building facades and cross-sections).

• Hotchkins, Rev. S. F. Ancient and Modern Germantown, Mt. Airy, and Chestnut Hill. Philadelphia: P. W. Ziegler and Co., 1889, p. 147-149 (text).

• Jellett, Edwin C. Germantown Gardens and Gardeners. Germantown: Horace F. McCann, 1914, pp. 14 and 79-81 (text).

• LCP: John G. Bullock Collection, numbers 59-64 (six lantern slides):
  • number 59: "Wyck - Haines Home Walnut La & Main St. 1-30-1913"
  • number 60: "Wyck" (undated view of front of house)
  • number 61: "Wyck - front door" (undated)
  • number 62: "Wyck - front bedroom" (undated)
  • number 63: "Wyck - March 1840 from daguerreotype made by Prof. Walter R. Johnson"
  • number 64: "Walnut Lane W of Main St. - Old Barn of Wyck altered into dwelling 2-18-1913"

• LCP: Jenkins, Charles F., "'Wyck' One of the oldest homes still preserved in Germantown, Written for the Garden Party at 'Wyck' June 7, 1913, By Charles F. Jenkins, Germantown" (pamphlet, 12 pages with photos and text. See also Shoemaker, folio 10).