sentences:  Besides its scientific and aviation accomplishments, the 15-month-long MacGregor Arctic Expedition was a valuable experience for several members who would serve again on polar expeditions.Ike Schlossbach would continue to be on expeditions until he was 70 years old; Paul Furlong would be with Grenfell in 1939; Roy Fitzsimmons would go on the United States Antarctic Service Expedition, 1939–41; Murray Wiener would be with Byrd on several expeditions and serve on Byrd's personal staff.