The regular sets produce wonderful civic buildings whilst other ranges produced fortresses, domestic houses and bridges. Wonderfully illustrated booklets came with the sets as did sheets of people, trees and so forth which are now rarely found. The models shown in the booklets can be quite complicated to build, with counterbalancing blocks used to allow projecting features or to bridge spaces, so a separate booklet of plans showing the block layout at every level of the model were also included.
The best place to go to find out about Anchor Blocks is George Hardy's site.
Sets are being produced again - see here to find out where to get them.
If you read german this site will be of interest.
|bricks that stack
|artifical stone, some metal parts too in some sets
|from around 1880 to 1930's
|F. Ad. Richter & Co., Germany, but also Gilbert in the USA
A typical illustration from an instruction book:
The contents of a bridge building set, including the sheets of cut-outs: