At the age of fifteen, while attending City College of New York, Gano began to work for as an operator for the Western Union Telegraph Company. During this period, in March 1887, Mrs. Maria Robins filed a lawsuit against Gano's mother, Mrs. Amelia S. Dunn, over a deed to a New York City property. In 1884, under pressure from her "runaway husband", Mrs. Dunn had been forced to transfer the property, then valued at $18,000, to General Dunn's office clerk, Henry G. Hunt for a single dollar. Hunt then transferred the deed to Mrs. Robins. Attempting to maintain her interests, Mrs. Dunn gave a second deed to her sister-in-law, who then transferred this second deed to Mrs. Dunn's sister. With affidavits filed by her estranged husband from Canada, and testimony from Mrs. Robins, the case stretched until November 1887. Mrs. Amelia Dunn finally won the lawsuit and the Hunt/Robins deed to the property was invalidated.