India Pigeongram No.7 – 1941 (6th Apr) Kalyan to Bombay – 2000 missives carried by 250 Pigeons

India Rocket Mail – 1935 (Apr 7) Sikkim Durbar Rocket Experiments – Gangtok Post Office to Durbar High School, cover bearing special blue and yellow 2r. label tied by fancy cachet ”ROCKET EXPERIMENTS/SIKKIM”, dely cds on reverse, fine, 200 flown, signed by Stephen H. Smith. From the L. V. Pont Collection of India Airmails.