H&G catalogs can be purchased on
ebay by country these days. A complete catalog will set you back a minimum of $400 plus. There are specialty catalogs dealing with regions of postal stationery, but they are few and far between finding them. Michel (Germany) puts out great Europe and Germany catalogs. The are others for Japan, Canada, USA, Africa, India, etc. Building a library is a GOOD thing, saves you money down the line when you actually get serious about collecting postal stationery. Subway Stamp Store has a good starter selection of postal stationery catalogs. Other dealers do as well.