HUDSON, Mass. - An original railcar used on the German railway during World War II is now on display at the American Heritage Museum in Hudson.

The covered goods wagon was used by Nazi Germany during the Holocaust. The rail car was built in 1913, and was used until the mid-80s before it was taken in and restored by the museum.

Museum president Rob Collings said the car was used for "the transportation of millions and millions of people, predominantly Jews and others that the Nazis regarded as sub-humans to concentration camps and to death camps that were in Poland."

Collings said the unveiling of the exhibit on Friday was tied to Jan. 20, the anniversary of the 1942 Wannsee Conference, also known as the "final solution," an event where SS leaders came together to plan the mass murder of all Jewish people.

They were being shot and murdered by the tens of hundreds of thousands, but this final solution industrialized killing to a scale we could never ever conceive of," Collings said. "Having killing centers throughout Poland that would liquidate millions of people, and it was all done on one sheet of paper.”

Collings said the Holocaust is a part of American History and it's important to be taught in connection to World War II.

“You can't tell one without the other," he said. "And the Holocaust today is being forgotten as World War II history is being forgotten because we're losing this connection to the people who survived it. Whether they survived the Holocaust or they fought in World War II, that generation in the next couple years will be leaving us."

Collings said some ongoing wars around the world are not too different from World War II, and it's important to learn from history so not to make the same mistakes.

“In the Middle East, in the Ukraine, America and the world has to remember this history," he said. "We have to know what happened, and if we don’t, It will be probably happen again.”