James Abbott was the acknowledged leader of the Immortal 10. Later in his life he wrote about the rescue of Dr. Doy for the Kansas State Historical Society. This account can be found in Richard B. Sheridan’s Freedom’s Crucible: The Underground Railroad in Lawrence and Douglas County Kansas 1854-1865. Major Abbott reports that they found a free state supporter named Dr. Edwin Grant in St. Joe. Major Abbott and Mr. S.H. Willes entered St. Joe together early to scout out the lay of the land. Major Abbot aid he remembered there was a free state paper called the St. Joe Democrat ran by Dr. Grant. They visited him in his office. Major Abbott said he expressed interest in the paper and then said, “I hear they have a man from Lawrence in the county jail.” Dr. Grant said there was a man arrested for slave stealing and that he had visited him many times. With that, Major Abbott figured he could trust Dr. Grant. He revealed the real reason he was in St. Joseph. Dr. Grant agreed to help in any manner he could. When told of the plan, Dr. Grant said that any new prisoners were first taken to the city jail and not directly to the county jail. They did learn that there was only one jailer at night. The immortal 10 abandoned the first plan to pretend they were depositing an arrest at night to gain entrance. They decided to get chisels and hammers to break in.
They sent Dr. Grant over to Elmwood tell some supporters to have boats at the river front the next night. The remainder of the Immortal 10 were scouting out escape routes to the river front. Silas Soule was sent inside the jail claiming to have message for Dr. Doy from his wife. When Soule returned, he advised that it would take 2 hours of unmolested work to break into the jail. They went back the the original plan.
I could find no information with an internet search about the free state paper in St. Joe nor Dr. Edwin Grant.