During the period between 1866 and 1867, Cope went on trips to western parts of the country.   He related to his father his scientific experiences; to his daughter he sent descriptions of animal life as part of her education. Cope found educating his students at Haverford "a pleasure", but wrote to his father that he "could not get any work done."   He resigned from his position at Haverford and moved his family to Haddonfield , in part to be closer to the fossil beds of western New Jersey. Due to the time-consuming nature of his Haverford position, Cope had not had time to attend to his farm and had let it out to others, but eventually found he was in need of more money to fuel his scientific habits.  Pleading with his father for money to pursue his career, he finally sold the farm in 1869.  Alfred apparently did not press his son to continue farming, and Edward focused on his scientific career.  He continued his continental travels, including trips to Virginia, Tennessee, and North Carolina.  He visited caves across the region. He stopped these cave explorations after an 1871 trip to the Wyandotte Caves in Indiana, but remained interested in the subject.  Cope had visited Haddonfield many times in the 1860s, paying periodic visits to the marl pits. The fossils he found in these pits became the focus of several papers, including a description in 1868 of Elasmosaurus platyurus and Laelaps . Marsh accompanied him on one of these excursions. Cope's proximity to the beds after moving to Haddonfield made more frequent trips possible. The Copes lived comfortably in a frame house backed by an apple orchard. Two maids tended the estate, which entertained a number of guests. Cope's only concern was for more money to spend on his scientific work. 
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