BAKERSFIELD, Calif. — Photos of the missing California City toddler brothers are now displayed on a billboard near the intersection of highways 99 and 65.

The digital billboard first started showing photos Friday of 3-year-old Orson and 4-year-old Orrin West, who were reported missing by their adoptive parents on Dec. 21.

Information on the $120,000 in reward money is also displayed on the billboard, along with contact information for authorities.

The boys biological family told 23ABC News Saturday that they are working to get the boys' photos on two more billboards in the Bakersfield area.

The Lamar Advertising Company owns the billboards and is providing the family with four weeks of free space on their billboards, according to the family.

The next billboard is expected to go up near the 58 East and Mount Vernon Avenue over the next week.

The brothers have been missing for nearly two months.

Anyone with information on the boys is asked to call the California City Police Department at 760-373-8606.