: 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"
If you search for “Jusqu-a Airmail Markings- A Study Ian McQueen” in auction databases or philatelic libraries, you are likely looking for one of three things: the original spiral-bound study, a reference to its content, or a cover authenticated by its methodology. Jusqu-a Airmail Markings- A Study Ian McQueen
Jusqu’à Airmail Markings: A Study " by Ian McQueen is a foundational text in aerophilately. It provides a detailed classification of postal markings used when an airmail request was only partially fulfilled. What are Jusqu’à Markings? Book Overview