According to the taste and interest of the collector there is a broad range of fields which one can collect. The focus of interest covers manuscripts, letters, official documents, SPs, FDCs, cartoons and autograph cards.
The fields of collecting are e.g. history, politics, movies, TV, sport, aviation, space, pop music, sciences, classical music, literature, art, world leaders, nobel prize recipients and much more. AdA is multi-faceted and tolerant , but not “disorganized” and “chaotic”.