In 1933, during the depths of the Great Depression, the Mason City Chamber of Commerce authorized the issuance of 10,000 yellow certificates with a face value of $1.00. This local effort to fight the economic disaster was represented in the unique certificates known as stamp scrip money. The overall goals of the program was to offer the unemployed work relief, build a road to further connect the city, experiment in the road building process using concrete macadam, and to stimulate local business all through the issuance of the 10,000 certificates. The idea of the project was introduced in early 1933, official road construction began in May, the road building process was finished in July, and the entire project ended in August of 1934. This ...