John R. Zeidler (1958 — d.7 May 2002 ) was a guitar maker, or luthier from Philadelphia, Pennsylvania during the late 1980s until his death in May of 2002. Most of his work involved the construction of archtop guitars which he made in three grades: The Archtop, the Jazz, and the Jazz Deluxe. Zeidler's instruments are considered exceptional in quality reflecting an attention to detail and construction befitting a builder of his talents. He was also a personable and approachable individual who attended builders conventions and spoke with fellow builders and players alike. Out of respect toward him and in an effort to defray the compounded cost of treatment for acute myelogenous leukemia, the disease which brought about his untimely passing at age 44, a number of contemporary archtop guitar builders came together in support producing the "Zeidler Project" 1958 (MCMLVIII) was a common year starting on Wednesday of the Gregorian calendar. ... May 7 is the 127th day of the year in the Gregorian Calendar (128th in leap years). ... For album titles with the same name, see 2002 (album). ... An engravers impression of Antonio Stradivari examining an instrument. ... Nickname: City of Brotherly Love, Philly, the Quaker City Motto: Philadelphia maneto (Let brotherly love continue) Location in Pennsylvania Coordinates: Country United States State Pennsylvania County Philadelphia Founded October 27, 1682 Incorporated October 25, 1701 Mayor John F. Street (D) Area    - City 369. ... Epiphone Emperor, an archtop design. ... Acute myelogenous leukemia (AML), also known as acute myeloid leukemia, is a cancer of the myeloid line of blood cells. ...