| National Air Mail Week Charleston WV May 19 1938 |
| National Air Mail Week Helena MT May 19 1938 PM Signed |
| National Air Mail Week Springfield IL May 19 1938 |
| National Air Mail Week Madison WI May 19 1938 |
| National Air Mail Week May 19 1938 Santa Barbara CA |
| National Air Mail Week May 19 1938 Buffalo NY |
| National Air Mail Week May 19 1938 Grove City PA |
| National Air Mail Week May 16 1938 Los Angeles CA |
| National Air Mail Week May 18 1938 Fairmont WV |
| National Air Mail Week Phoenix AZ May 20 1938 |
| National Air Mail Week Lansing MI May 18 1938 |
| National Air Mail Week May 16 1938 Saint Joseph MO |
| AIR MAIL WEEK - SALINAS, CALIF. - MAY 1938 -SCOTT #C23 |
| Air Mail Week May 17, 1938 Richfield Springs, NY |
| National Air Mail Week Salem OR May 20 1938 |
| National Air Mail Week May 19 1938 Kitty Hawk NC |
| National Air Mail Week May 19 1938 Chicago IL |
| National Air Mail Week May 21 1938 Reading PA |
| Air Mail Week May 15-21 1938 Kitty Hawk NC |
| National Air Mail Week Frankfort KY May 18 1938 |
| National Air Mail Week Lincoln NE May 19 1938 |
| National Air Mail Week May 19 1938 Highbridge NJ |
| National Air Mail Week Saint Paul MN May 18 1938 |
| National Air Mail Week May 17 1938 Tacoma WA |
| National Air Mail Week Atlanta GA May 19 1938 |
| National Air Mail Week Carson City NV May 20 1938 |
| National Air Mail Week May 19 1938 Brattleboro VT |
| National Air Mail Week Santa Fe NM May 19 1938 |
| National Air Mail Week Oklahoma City OK May 19 1938 |
| National Air Mail Week Trenton NJ May 19 1938 |
| National Air Mail Week Columbia SC May 19 1938 |
| National Air Mail Week Nashville TN May 18 1938 |
| National Air Mail Week May 15 1938 Los Angeles CA |
| National Air Mail Week Newburgh New York May 19 1938 |
| National Air Mail Week May 20 1938 New York NY |
| National Air Mail Week Jefferson City MO May 19 1938 |
| National Air Mail Week May 18 1938 Rome NY |
| National Air Mail Week Pierre SD May 19 1938 |
| National Air Mail Week May 19 1938 Broken Arrow NE |
| National Air Mail Week May 19 1938 Laconia NH |
| National Air Mail Week May 21 1938 Philadelphia PA |
| National Air Mail Week Olympia WA May 20 1938 |
| National Air Mail Week May 20 1938 Terre Haute IN |
| National Air Mail Week May 16 1938 Lockport NY |
| National Air Mail Week May 17 1938 Denver CO |
| National Air Mail Week May 19 1938 Green Bay WI |
| National Air Mail Week May 19 1938 Norfolk VA |
| National Air Mail Week May 19 1938 Kitty Hawk NC Large |
| National Air Mail Week May 18 1938 Williamsport PA |
| National Air Mail Week May 19 1938 Canton PA |
| National Air Mail Week Denver CO May 18 1938 |
| National Air Mail Week May 19 1938 Hinton WV |
| National Air Mail Week May 19 1938 Perth Amboy NJ |
| National Air Mail Week Philadelphia PA May 15 1938 |
| National Air Mail Week May 16 1938 Arcata CA |
| National Air Mail Week Boise ID May 20 1938 |
| National Air Mail Week May 17 1938 Vero Beach FL |
| National Air Mail Week May 16 1938 High Point NC |
| National Air Mail Week Raleigh NC May 18 1938 |
| National Air Mail Week Austin TX May 19 1938 |
| National Air Mail Week May 21 1938 Tucson AZ |
| National Air Mail Week May 21 1938 Altadena CA |
| First Air Mail Week May 1938 San Diego cover CBG |
| U.S. C-11 PAIR "AIR MAIL WEEK" COVER MAY 15-21, 1938 |
| National Air Mail Week May 19 1938 Owatonna Minnesota |
| National Air Mail Week May 19 1938 Jefferson City MO |
| First Air Mail Week May 1938 Kitty Hawk cover CBU |