Any episode labeled Hank and Tank s/b Hop and Tank
42-02-08 (also dated 42-02-19) Trapped in Mine s/b 43-02-18 or 43-02-19. Series premiere was on 42/08/31. Announcer says tune in next Monday, Feb. 22 for a contest. RGI says (Friday) 43-02-19, but the announcer says to tune in tomorrow so it is probably 43-02-18.
42-10-08 The Aerial Cannon was 42-10-07
42-10-10 Title unknown was 42-10-09 Hop Back in England (42-10-10 was a Saturday)
42/10/30 Russian Adventure - Part 45 s/b Episode 45
42/11/03 Russian Adventure - Part 47 s/b Episode 47
42/11/04 Russian Adventure - Part 48 s/b Episode 48
42/11/06 Russian Adventure - Part 50 s/b Episode 50
These are episode #s, not part #s of the Russian Adventure
44-01-07 Title unknown was 44-01-18 Escape Nazis in Secret Room
44-01-18 Grey Ghost was 44-01-17 - Escape N azis in Secret Room aka Grey Ghost. The show says it is the first day of the 4th War Loan which was Tuesday 44-01-18, but it also says it is the start of a new week which implies Monday. Since there was a 4th War Loan program broadcast on the evening of Monday 44-01-17, the show was probably on that date.
44-01-21 (also see as 44-01-24) Tank's Medical Operation (aka N azi Threat) follows Stolen Patrol Car by at least 2 episodes based on the storyline. The date which shows up in some collections and more likely to be correct is 44-01-27.
44-01-23 Title unknown was 44-01-24 Stolen Patrol Car
47-09-04 (1284) The Channel Wing Plane #7 was really Hop Harrigan 47-09-05 (1285) Gail Kidnapped (opening mentions The Foster Parent's Plan For War Children)
47-09-05 (1285) The Channel Wing Plane #8 was really Hop Harrigan 47-09-08 (1286) Hop & Tank Chase La Pantera (opening mentions aviation medicine)
47-09-08 (1286) The Channel Wing Plane #9 was really Hop Harrigan 47-09-09 (1287) Gail's Bracelet Found (opening mentions Army Air Forces Rescue Service)
47-09-09 (1287) The Channel Wing Plane #10 was really Hop Harrigan 47-09-10 (1288) Police Find Abandoned Car (opening mentions boomarang-shaped Flying Wing)
47-09-10 (1288) The Channel Wing Plane #11 was really Hop Harrigan 47-09-11 (1289) Channel Wing Plane Pt 12 (opening mentions J. S. MacDonald)
50-08-13 The Disappearing Deputy was an episode of Hopalong Cassidy