Carrigan, Jay. Carpatho-Ukraine 1944-1945 [exhibit]: An ‘Editor’s Choice’ stamp exhibit. ([No location]: Exhibitors Press, 2017). [G7101 .P969 C316c 2017 Exhibit]
Carrigan, Jay. The Liberation of Yugoslavia [exhibit]: An ‘Editor’s Choice’ stamp exhibit. ([No location]: Exhibitors Press, 2018). [G6841 .M642 C316c 2018 Exhibit]
Dal Negro, Francesco. Le Alpi e le vie della posta (Milan: Post Horn, 2020). [G5701 .P8576 D136a 2020]
Daniel F. Kelleher Auctions. The William S. Langs stock & private holdings of United States & Possessions stamps, part 1: October 28-30, 2020 (Danbury, Connecticut: Daniel F. Kelleher Auctions, 2020). [NS Langs, William S.]
Edwards, Clive. Patriotic & propaganda of the British Commonwealth (York, [England]: Published by Label Lads, in association with Glass Slipper, Document Consultancy, [199-]). [942.144:Q/E39p]
Lyons, Larry. Larry Lyons collection of auction clippings (, 1951-2004). [CS2 R24 P4 S2 Lyons Boxes 1-2; CS2 R24 P4 S3 Lyons Box 3]
Menuz, Wayne. Catalog of postal stationery airgraphs: United Kingdom – East Africa Command – Ceylon – Egypt – India – Palestine – South Africa – Southern Rhodesia. World War II prepaid forms for microfilming and resultant photograph letters. (Chester, VA: United Postal Stationery Society, 2020). [HE6238 .M549c 2020]
Robert A. Siegel Auction Galleries. United States 1847 First Issue, the William H. Gross collection: October 27-29, 2020 (New York, New York: Robert A. Siegel Auction Galleries, 2020). [NS Gross, William H.]
Great so see that that there is a publication on WW II airgraphs! I only recently bought some airgraphs sent from Oman / Muscat and am thrilled to dig deeper into this.