Mark J. Nelson, 68, of Lititz, formerly of New York City, NY, passed away Tuesday, January 30, 2018. Born in New York City, NY he was the son of the late Ralph A. Nelson and the late Wilma J. (Schwarzman) Nelson. He was an NYPD police officer for over 22 years. An avid motorcycle, sci-fi and gun enthusiast, Mark is survived by his two daughters, Michelle Nelson and Jennifer Huffman and his son in law Kyle Huffman. Also surviving are two cousins, Lily and Candace Melendez. Finally he is survived by his beloved cats Rufus, Annie, Jolie, Sid and Morpheus. A Memorial Service will be held at 1PM on Sunday, February 4, 2018 at Charles F. Snyder, Jr. Funeral Home & Crematory, 3110 Lititz Pike, Lititz, PA 17543. Interment will be private and at the convenience of the family. In lieu of flowers, contributions in Mark's memory may be made to Children International, 2000 E. Red Bridge Road, P.O. Box 219055, Kansas City, MO 64121, St. Jude Children's Research Hospital, 501 St. Jude Pl, Memphis, TN 38105 or Alley Cat Allies, P.O. Box 98179, Washington, D.C., 20077-8179.