In my opinion one of the hardest (but also the most interesting) challenges of stamp collecting are long definitive sets that span into all possible directions. The most notorious ones, like UK Machin stamps and Norwegian posthorns feature hundreds of major types scattered all across the stamp catalog timeline, and the varieties easily double or triple the number of items to collect. These are a huge challenge to keep track for anyone.
One of the frequently asked questions by newbie stamp collectors seems to concern free online stamp catalogues. So, I thought it would be useful to put a resource post about the available alternatives. I hope You all enjoy the following sites 
For some time I’ve been thinking stamp catalogue index numbers (yes, those running numbers that stamp catalogues use to identify each stamps) and their purpose. I know it sounds a silly topic to bother the mind, but it’s actually very interesting one.
For a long time I’ve been thinking about writing a review of William.E. Steiner’s Stamp Albums Web but haven’t really gotten around it. But let’s give it a go… In short the deal is simple and sweet: worldwide stamp album pages for yours to keep and print for only US$30.
Scott Stamp Catalogue has hit the nail with their current ad campaign running (at least) in Linns. IMO the simple question “Which of these stamps went up in value?” summarises a whole lot of the driving forces in stamp catalogue business.
In this world nothing is certain but death and taxes. The idea of stamp inventory program (and other other stamp collecting software) is to be of assistance when either one hits the collector. On simplified level, a stamp inventory solution keeps track of what’s inside the collectors collection, and what it might be worth. In my previous post about stamp collecting software I pretty much axed dedicated software solutions and hailed Microsoft Excel. With this post I’ll show you in more detail how I keep track of my collection.