Atlas began life as the Atlas Tool Company in 1924, and soon became well known for their track systems, which expanded over time to a complete range of H0 and N models, which are outside the remit of this site.
More recently, Atlas have entered the 0 gauge market, including three rail, and 027, with the acquisition of the Industrial Rail line.
This is a link to an external site that lists, and pictures, all the wonderful Atlas reefers :
Reefers