PERTWEE, ROLAND. Interference. (Pub. abroad in The Dally mirror, London, May 16-July 28, 1927) © 16-20May27, AI-9719, 21, 23-24May27, AI-9780, 25-27May27, AI-9790, 28, 30-31May27, AI-9801, 1-3Jun27, AI-9827, 4, 6-10Jun27, AI-9828, 11, 13-14Jun27, AI-9860, 15-17Jun27, AI-9862, 18, 20-21Jun27, AI-9882, 28Jul27, AI-10047; 25Nov27, A1013397. Roland Pertwee (A); 7Jan55; R142698-142707.