Confidential Letter Regarding Mr. Diaz's Decision to go to Riverside1921-01-01unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_023_3.3_4_10_0007The document provides information on different classes of service for telegrams, including symbols used to indicate the class of service. It also includes a sample telegram message sent to inform about the transfer to Riverside School.