RADIUS NATION
Bart Stevens’ World
of
Racing History and Music Intersect
Estate Collection Management
and offering unique racing memorabilia is the main goal for Radius Nation, but there is so much more driving the desire.

Memorabilia
A leader in consignment sales focusing on authentic motorsports memorabilia and collectibles for individuals, estates and museums.

The Miller Grill
A new historic novel about Racing, Music, Friendship and Growing Old. Sam Nunis and his best friend reflect on their lives’ exploits.

Collection Management
Experience in organizing, documenting, appraising, and selling memorabilia and collectibles for individuals, estates and museums.

Music Studio Career
Bart’s 30-plus year career in Media & Entertainment started in Los Angeles working at the world’s premier recording studios.

Racing History
As a student of history, Bart researched, organized, and promoted an event described as a traveling museum exhibit based on oral history.

Events
Book signing events along with providing unique racing items to the public at memorabilia shows, advertising shows, and swap meets.
Memorabilia
As a leader in racing related consignment sales, Radius Nation offers unique items from the personal estates of the legends in motorsports and from the private collections of individuals. Some of these items have never been for sale or available on the open market prior.
This means that we can provide rich provenance and exciting stories to go with the memorabilia and collectibles we offer. Often the items are photo matched, which brings a new level of pride and confidence with the purchase.
We can help you sell your collection if you are ready.
The Miller Grill
The uplifting story of Sam Nunis facing the days after his forced retirement from 26 consecutive years of promoting races at Trenton International Speedway.
In total, Nunis promoted over 500 races, including sprints midgets, Indy cars, stocks, and sports cars across the United States, but is not ready to be put out to pasture.
While spending the day at the Miller Grill, Nunis and his best friend Bobby run down memory lane reflecting on their lives’ exploits and reliving the unhinged promotions Nunis pulled off during his career.
Collection Management
We work with individuals and families to help manage racing and motorsports collections they have inherited or acquired over the years. This includes organizing the collection to get a better understanding of the size, importance, and value of the items.
Documenting the stories, history and information about the objects is the next step, so the provenance can be fully appreciated. If required we appraise items as needed for resell, consideration for auction, or for Date of Death Value. And most importantly we connect sellers and buyers to maximum the value of the collection.
Music Studio Career
Being in the studio with your musical heroes is sometimes hard to describe. As a staff engineer at Ocean Way Recording, Record One, Bill Schnee Studios and Martinsound Studios, I was able to witness and be a part of magical moments—when Kenny Loggins is standing beside you working out vocal parts or David St. Hubbins and Nigel Tufnel are discussing keyboard parts. Or better yet, when Michael Jackson has a new song idea, and he sings all the instrumental parts then lays a vocal over the track. But nothing tops sitting in the room when Mark Knopfler and Guy Fletcher are creating the musical score for The Princess Bride.
Racing History
Researching racing history and learning the back stories is an escape from today’s busy world. For ten years I planned and implemented a traveling exhibition honoring motorsports dignitaries. This required facilitating the display of memorabilia, coordinating with high-profile guest speakers, while working with the staff to manage catering, silent auctions, race car displays, and retail sales.
The Racers Reunion Banquet opened so many doors and was crucial in creating friendships and relationships. The topics covered everything from local dirt tracks to the Indianapolis 500 to quarter midgets.
Events
The Miller Grill book tour kicks off in May 2025. Book signing with Q&A are booked in Indiana and Iowa, with more dates coming soon. You can pre-order the book now. Online sales for collectibles and memorabilia are great for reaching collectors around the world, but there is just something about going to a show and seeing the items in person. Sometimes seeing items that you have only heard about, but have never seen in person. Or perhaps finding a personal item that once belonged to one of your racing heroes—Bobby Unser’s FIA license, Johnny Rutherford’s Gatorade jacket or maybe Carroll Shelby’s goggles.

Testimonials
Good Vibes!

I contracted with Radius Nation to sell my auto racing collection. Mr. Stevens has demonstrated a proven ability for honesty, integrity and attention to detail. His applied extensive knowledge of racing history has provided maximum return of sales. I highly recommend him for anyone considering selling their collection.
Sandra in Indiana

You really helped us with the collection we inherited, and we won’t forget it!
Patty in Texas

After my brother-in-law passed away, we needed help with his collection since we lived 1,200 miles away. Bart was referred to us and we could not have tackled the project without him. His knowledge of collectibles and especially the 300 plus diecast we had was amazing. Thank you, Bart!
Bill in Maryland
Featured Items
If you are looking for unique one-of-a-kind treasures, you have found them, credentials, race worn, books, trophies, decals, race cars, helmets, and so much more

ABC Wide World of Sports
A vintage print from the days of “The thrill of victory, and the agony of defeat.”

A. J. Foyt signed Photo
May 13, 1958, A.J. Foyt @ Indianapolis Motor Speedway, Indianapolis Star

Bell Helmets Denim Jacket
Betty Rutherford’s 1970’s red denim jacket.

Lone Star JR’s Helmet
Johnny Rutherford’s Race Worn 1970s Bell Open Face Bell Helmet

1939 Indy 500 Credential
Race Day Pagoda Pass for the 1939 Indianapolis 500.

Terre Haute Staff Button
1969 Terre Haute Action Track Staff Credential Button
Bart Stevens
Bart Stevens spent 30-plus years in the Media & Entertainment industry working with many award winning artists including Michael Jackson, Joe Satriani, Boz Skaggs and Spinal Tap.

Bart Stevens
Today, Bart is a leader in consignment sales focusing on authentic motorsports memorabilia and collectibles for individuals, estates and museums.