The boundaries of said districts shall be as shown on the map attached to and made a part of this chapter, which map shall be known as the "Official Zoning Map of the Borough of Glenolden," prepared by Damon and Foster, now known as H. Gilroy Damon and Associates, Civil Engineers, under date of February 15, 1937, as revised. Said map and all notations, references and dates shown thereon are hereby incorporated by reference into this chapter and shall be as much a part of this chapter as if all were fully described herein.