2 Comments

1. 
   steamtug1959 · 2017-06-01 12:24

   @marcomaestro my Grandfather die Topographic Maps in the 1.WW.
   From the Airplanes the Photographers did Photos
   and than with the Photos they did the Maps.
   Ich you watch the Album, maybe it is easyer to unterstand, than my terific English, haha !!!
   See ya, Ralph

2. 
   steamtug1959 · 2017-06-01 12:25

   @marcomaestro Errata corrige : did, ...not die