How to Collect : Page 157
For most any group along these lines special cata-logs, albums and "study groups" are available as manyhave traveled these same roads and you will have muchcompany.
Many people have confined their collecting to Roose-velt stamps, i.e. stamps that have been issued in honorof our late President Franklin Delano Roosevelt by var-ious nations throughout the world and here, too, specialalbums are available. Still others collect "Lincolniana,""Lindberghiana," and similar selected subjects.
Such limiting of collecting to the pictures on thestamps leads to one of the most fascinating forms of col-lecting — the "subject" or "topical" collection.