49ers Alex Smith and Joe Staley joined the search for 15-year-old Sierra Lamar Saturday.
Volunteers will continue the search for a missing Morgan Hill 15-year-old Wednesday morning.
Sierra Lamar disappeared near her home three weeks ago. Since then volunteers have been holding search parties for the teenager every Wednesday, Saturday and Sunday.
There are also asking for donations of the following office supplies:
During that time investigators have also received more than 1,000 tips.
Law enforcement and volunteers have put in hundreds of man hours searching several miles around Morgan Hill.
Wednesday's search will begin with a volunteer meeting at Burnett Elementary School at 85 Tilton Rd. in Morgan Hill.
LaMar's family also announced a $10,000 reward Saturday for information leading to her safe return.