A number of Native Americans made their home for years in this area, leaving artifacts that have created an interest in Indian life and culture in Texarkana. In conjunction with October's designation as Native American History Month, the Texarkana Museums System is presenting two lectures from the Arkansas Archaeological Survey on the culture and artifacts of the Caddo Indians. Dr. Frank Schambach will speak on "The Bow Wood Traders" from 7 p.m. to 8 p.m. Monday at the Ace of Clubs Carriage House, 420 Pine St. Dr. Schambach will describe the Caddo culture of the Red River Valley with an emphasis on the "Sander's Site" trading activities. He will show slides with the discussion. "The trading post known as Sander's Site was north of Texarkana," said Amy Wilkinson, TMS education director. "He will talk about the trade that went on between the Indians for bows made from bois d'arc trees known as Osage bows." Dr. David Jeane will present another lecture on Native American cultures from 7 p.m. to 8 p.m. Oct. 11 at the Carriage House. Speaking on "Artifact Identification," Dr. Jeane will look at artifacts that have been discovered or collected and will answer questions about them. Admission to both lectures is free to members and $3 for nonmembers. The Texarkana Historical Museum, one of the three museums of the Texarkana Museums System, holds a permanent exhibit of the early Native Americans from the region. The exhibit is open to visitors from 10 a.m. to 4 p.m. Tuesday through Saturday. Schools and other groups are invited to schedule special tours of the museum. Admission for adults is $2. To schedule a group tour, call the Texarkana Museums System at (903) 793-4831.