Illinois Route 66 Assocation Hall of Fame members postcards

I am interested in completed a collection of Hall of Fame member postcards. They are manilla in color and have a hand drawn sketch of the honoree on the front and on the back is a brief paragraph about why they were inducted. I have a few postcards and am trying to determine how many were produced. There are some examples in my postcard photo album. I just recently purchased one for Francis Martin, the caretaker for Our Lady of the Highways in Raymond while on the associations 20th annual Motor Tour. The shrine is celebrating its 50th anniversary this year and was a passport stop on the tour. Any help in this endeavor is greatly appreciated.
Edited for:
Rich Henry has informed me that the cards were only issued from 1990 -1993 and there were 16 total inductees for those years. Here is that list from the Hall of Fame website:

Inducted June 9, 1990
Ernie Edwards, Pig Hip Restaurant, Broadwell
John Geske and J.P. Walters, Dixie Truckers Home, McLean
Frances Marten, Our Lady of the Highways Shrine, Raymond
Francis Mowery, Illinois State Police, Pontiac
Russel Soulsby Shell Service Station, Mt. Olive

Inducted June 8, 1991
Mertha Paulsen Jensen, Paulsen (Carefree) Motel, Dwight
M.F. "Cotton" McNabney, Cotton's Village Inn, Bloomington
Ed Waldmire Family, The Cozy Dog Drive-In, Springfield

Inducted June 13, 1992
Ariston Cafe and the Adam Family, Litchfield
Steve and Glaida Funk, Funk's Grove
Dell Rhea's Chicken Basket, Willowbrook
John Stonecipher, Stoney's Service, Odell

Inducted June 12, 1993
Chester D. Henry, Illinois State Police, Pontiac
Ervin Kolarik, Chicken Basket Restaurant, Willowbrook
Effie Marx, Waitress, Dwight
Bill Shea, Shea's Finest Truck Covers, Springfield