74 Office Machines, Text Processing Systems and Visible Record Equipment.
7420 Accounting and Calculating Machines. (Part 1)
7420 Accounting and Calculating Machines. (Part 2)
7420 Accounting and Calculating Machines. (Part 3)
7420 Accounting and Calculating Machines. (Part 4)
7420 Accounting and Calculating Machines. (Part 5)