1939
January January; 24 (1): 1 - 136	February February; 24 (2): 137 - 296	March March; 24 (3): 297 - 434
April April; 24 (4): 435 - 597	May May; 24 (5): 599 - 762	June June; 24 (6): 763 - 904
July July; 25 (1): 1 - 160	August August; 25 (2): 161 - 336	September September; 25 (3): 337 - 490
October October; 25 (4): 491 - 660	November November; 25 (5): 661 - 844	December December; 25 (6): 845 - 1042