In 1899 when the collection was purchased from his executors by Mr.Jesup, the writer went to Philadelphia under the instructions of Professor Osborn, Curator of Fossil Vertebrates, to superintend the packing and removal to the American Museum.

At that time the collection made by Hubbell was still in Memorial Hall, and the boxes were piled up just as they came in from the West, never having been unpacked.

Professor Cope's assistant, Mr.Geismar, informed the writer that Hubbell's collection was mostly fragmentary and not of any great value.

Mr.Hubbell's letters from the field unfortunately were not preserved, but it is likely that they did not make clear what a splendid find he had made, and as some of his earlier collections had been fragmentary and of no great interest, the rest were supposed to be of the same kind.
"When the Cope Collection was unpacked at the American Museum, this lot of boxes, not thought likely to be of much interest, was left until the last, and not taken in hand until 1902 or 1903.

But when this specimen was laid out, it appeared that a treasure had come to light.