Show Dr Cook Becomes Convict No 23 18 LEA LEAVENWORTH VEN Kan April 6 6 Dr Frederick A. A Jook 0 ok former fortner I Arctic explorer and s styled self dis dip coverer of the tho north pole polo arrived atthe atthe at the federal prison here hero today hi in CU- CU cut cut- I cu-I tody ody of ot Texas officers to start serving i ing a sentence of thirteen years and five months for using tho the mails mailo to defraud Cook was convicted in Fort Worthy Worth Texas of fraud in the promotion of oil stock sales He was assigned to the hospital hospit t section of the prison He became convict No |