What sets the Standard Catalog of the Postage Stamps of Yemen and South Arabia
apart from Michel and other catalogues listing the stamps of this area is the background information that Carlson Chambliss adds to the listings of some of the stamps of Yemen, Aden, and South Arabia.
He provides prices for almost all of the stamps issued officially as well as for those that were released unoffically. He notes issues that he calls "Rejected Issues" such as the "Roi Ahmed" overprints without pricing them.
He also includes the reported number of mint stamps printed when available. I use "mint stamps printed" because he does not include the numbers for CTO stamps, which were usually significantly higher. The American weekly Stamps
often included the CTO numbers in their New Issues columns.
The catalogue is currently available from the author of the catalogue. Please email me for his postal address. It is also available on eBay from time to time. The price is around $40.00 US.
Mr. Carlson Chambliss has written about this area's stamps and postal history for Linn's Stamp News
Disclaimer: This is a review of a catalogue that I bought for myself.
Disclaimer 2: I have not changed the spelling of my last name, despite what it may say in the catalogue.