Later still, American Bricks were produced by Playskool, who added other colours and parts and used a different pattern of card roof. These then became Playskool Building Bricks.
Sets of Halsam American Plastic Army Bricks were also produced, in the 1960's to 70's judging by the box design. These contained dark green bricks, with white windows and doors and foundation bricks. Other than the colour of the bricks, parts are identical to those found in the regular Halsam American Plastic Brick sets. The card roofs had a curious green and white camouflage-style design.
|category||bricks that interlock|
|materials||wood and card, later plastic and card|
|date||1940s to 1970s?|
|made by||Halsam Products Company, Chicago
later Elgo Plastics Inc.
later still Playskool
A sample building from a plan booklet:
The back of a plan booklet showing the general style of buildings produced:
The Playskool version:
There is lots of information about American Plastic Bricks here.