WINSTON-SALEM, N.C. (WGHP) — The Winston Cup Museum is closing, and the owner says it’s because of a legal battle with the tobacco company ITG.

On Monday, the museum’s founder, William Spencer, posted the news on Instagram.

Spencer said the museum, located at 1355 N. Martin Luther King Jr., Drive in Winston-Salem, opened in 2005 “as a way to say ‘Thank You’ to R.J. Reynolds Tobacco Company for their 33-year sponsorship of the Winston Cup Series and as a “gift” to the City of Winston-Salem to help preserve our unique place in NASCAR history.”

R.J. Reynolds debuted the Winston brand of cigarettes in 1954, and, in 1971, NASCAR launched the Winston Cup Series when the Winston brand became the title sponsor of NASCAR’s elite division, according to the history on the museum’s website. That sponsorship — and the Winston Cup Series — ended in 2003.

R.J. Reynolds later sold the brand, along with Salem and Kool, to Imperial Tobacco Group, now Imperial Brands, in June 2015.

“As everyone is fully aware, ITG has filed numerous lawsuits against me, my wife, our primary businesses, and the museum saying that ITG’s purchase of Winston Cigarettes from R.J. Reynolds Tobacco Company in 2015 somehow gave it ownership of Winston Cup history,” Spencer said. “They claim we are infringing on their ability to market their cigarettes to racing fans.”

Spencer and the museum have fought back against ITG for four years, including two lawsuits that were dismissed. The third lawsuit, Spencer said, is “exhaustingly ongoing.”

The founder said he determined that continuing the battle was not worth the cost, both materially and personally.

“For the time being, if you see any branding that says Winston Cup, Winston Cup Series, or Winston Cup Museum, please know that it is not affiliated with myself or any companies that I have ownership in. It will be ITG Brands using the Winston Cup to promote their cigarettes.”

Spencer’s full statement is included below.

Dear Winston Cup Museum Fans and Followers,

I opened the Winston Cup Museum back in 2005 as a way to say “Thank You” to R.J. Reynolds Tobacco Company for their 33-year sponsorship of the Winston Cup Series and as a “gift” to the City of Winston-Salem to help preserve our unique place in NASCAR history—which is something very important to me. I have fully supported the museum myself. It has never had any affiliation with R.J. Reynolds Tobacco Company, Sports Marketing Enterprises (SME), or NASCAR. But I have personally had their moral support and that has meant a great deal to me.

I am incredibly proud to have had the honor of preserving this history for the past 18 years that we have been open to the public. I believe I have helped keep the Winston Cup era alive for many racing fans. So it is with great personal sadness that the time has come for me to close the museum’s doors to the public for now.

As everyone is fully aware, ITG has filed numerous lawsuits against me, my wife, our primary businesses, and the museum saying that ITG’s purchase of Winston Cigarettes from R.J. Reynolds Tobacco Company in 2015 somehow gave it ownership of Winston Cup history. They claim we are infringing on their ability to market their cigarettes to racing fans. We have put up a good battle over the past four years against multiple lawsuits. Two of which have been completely dismissed. The third lawsuit is exhaustingly ongoing.

After much contemplation, I have come to the realization that fighting with ITG is not worth the resources that it will take and the toll it has taken on me and my family.

For the time being, if you see any branding that says Winston Cup, Winston Cup Series, or Winston Cup Museum, please know that it is not affiliated with myself or any companies that I have ownership in. It will be ITG Brands using the Winston Cup to promote their cigarettes.

Sincerely, William L. Spencer Winston Cup Museum Founder