For the aerophilatelist, "Jusqu'à Airmail Markings" is more than a catalog; it is a detective’s tool.
McQueen’s work (published circa 1970s–80s, often in the Airpost Journal or as a private monograph) relies heavily on European auction catalogs and a few major collections. It underrepresents markings from South America (e.g., Argentina used Hasta equivalents) and Asia. Later scholars, such as Jean-Pierre Mangin and the Société d’Études Aéropostales, have expanded McQueen’s listings, but his core typology remains intact. Jusqu-a Airmail Markings- A Study Ian McQueen
“The Jusqu’à marking is not merely a postal curiosity but a key to understanding the transitional phase from surface to all-air transport. Each marking tells a story of negotiated rates, national rivalries, and the gradual shrinking of the world.” For the aerophilatelist, "Jusqu'à Airmail Markings" is more