Springbett, David J.: The Grand Prix Club Book (1950–2000) (Onex/Geneva 2001), 352 pages, hardcover. The book was sold by David Feldman (130 $). PLUS: Wijnants, Paul: 50 Ans Académie Royale Belge de Philatélie 1966–2016 (2016), 260 pages, hardcover, dust jacket; included is a short letter by Wijnants for Bjäringer. Both books in excellent condition. Estimate: 80 Euro
