In the world of aerophilately (the study of airmail), "Jusqu'à Airmail Markings"
: These marks are rare and highly sought after by collectors because they tell a precise story of logistics, showing exactly where a letter transitioned from air to surface transport. Ian McQueen’s "A Study" Jusqu-a Airmail Markings- A Study Ian McQueen
Each era has its own chapter in McQueen’s book. By following his chronology, a collector can tell a complete story of how airmail evolved from an experimental luxury to a scheduled, segmented service. In the world of aerophilately (the study of
When you obtain a copy, do not read it cover to cover. Use it as a dictionary. Keep it next to your magnifying glass. When you acquire a cover with a French instruction, look up the location first, then check the rate, then verify the die. Each era has its own chapter in McQueen’s book
Without Ian McQueen’s systematic study, these covers would be mere curiosities—interesting but indecipherable. With his study in hand, the collector becomes a detective, tracing a letter’s path from a Parisian boulevard to an African lagoon, then onward by ship to a Brazilian port.