In the early twentieth century a variety of companies manufactured full keyboard adding machines that competed with the products of Felt & Tarrant and of Burroughs. Their inventors often had ties to ...

William Seward Burroughs (ca 1855-1898), the son of a machinist in upstate New York, spent some years working as a clerk before moving to St. Louis and taking up invention. From 1884, he attracted ...

Which adding machines for your office are best? While adding machines, sometimes referred to as printing calculators, may seem outdated and obsolete, they remain indispensable for offices all over the ...

Which adding machines for your office are best? While adding machines, sometimes referred to as printing calculators, may seem outdated and obsolete, they remain indispensable for offices all over the ...