Girls carrying letter-marked placards, Congo, ca. 1920-19401920-1940A row of girls dressed in printed wraps stands outdoors. They hold small placards, each of which bears a single letter.Also included in the International Mission Photography Archive.The back of the postcard has no a few lines of handwriting and is stamped and postmarked. Printed in the margin of the correspondence section is "Saint-Andre Mbeno. Laborieux succes - Moeizama bijval - Laborious success - Laborioso exito."still image