IRS employees have stood together since 1938.

Collectors organize.

Internal Revenue collectors in Wisconsin band together to improve their working conditions. Their group grows into the National Treasury Employees Union.

A national union.

The first convention, in Milwaukee, makes the association a permanent national organization.

Open to every IRS employee.

When the agency becomes the Internal Revenue Service, the association opens to all IRS workers and takes the name National Association of Internal Revenue Employees.

Federal unions are recognized.

An executive order from President Kennedy recognizes federal employee unions and lets them reach agreements with agencies.

NTEU is born.

The union takes the name National Treasury Employees Union as it grows across the Treasury Department.

Rights written into law.

The Civil Service Reform Act puts federal employees' right to organize and bargain into law.

Seventy years strong.

NTEU marks seventy years with a poster of members walking picket lines and rallying for fair pay.

From NTEU's 70 Years Strong poster, 2008.

Proud to work for America.

Members rally on Capitol Hill on March 2, 2011, to show what federal workers do for the country.

From NTEU National's Facebook, 2011.

I am NTEU.

IRS chapters across the country turn out for the I Am NTEU campaign, including Chapter 47 in Manhattan.

From NTEU National's Facebook, 2012.

The fight continues.

The IRS says it has ended its contract with NTEU. NTEU says the contract still stands and is challenging the move.

Six offices, one chapter.

Chapter 8 is one of NTEU's lowest numbered chapters, listed by NTEU for IRS employees in South Dakota. Today it serves members in Fargo, Sioux Falls, Aberdeen, Rapid City, Minot and Bismarck.