• 7 This policy includes a ground plan. Copy from the Philadelphia Historical Commission, in Holt files, INDE archives; "View of the ruins caused by the great fire Northeast corner of Sixth and Market st. which began on the night of Weds. April 30, 1856 — From the Northeast," LCP.; "The fire Department of Philadelphia," typescript based on the Fireman, D.D. Dana, 1858, from Contributionship Fire Insurance file, courtesy archivist Carol Smith; Baxter's Panoramic Business Directory of Philadelphia, for 1859; "Where John Wanamaker Began Business," Jackson, Market Street, 110.