*67 then your number
Dial *67 before dialing the phone number.
*67
Put 141 before the number you dial
The phone number of the Illinois Traction Society is: 217-423-4777.
The phone number of the State Of Illinois Museum is: 217-785-0037.
The phone number of the Illinois Aviation Museum is: 630-854-5506.
The phone number of the Western Illinois Museum is: 309-837-2750.
The phone number of the Illinois Railway Museum is: 815-923-4391.
The phone number of the Illinois Military Museum is: 217-923-3235.
The phone number of the University Of Illinois At Chicago is: 312-355-4850.
The phone number of the Illinois State Museum is: 217-782-7386.
The phone number of the Southern Illinois University is: 618-453-5388.
The phone number of the Illinois State Genealogical Society is: 217-789-1968.