SAE

Reader's Digestが募集している100 WORD STORYの応募要領の一部を抜粋します。
Don't forget to include your full name, address, email and daytime phone number with all correspondence. We may use entries in all print and electronic media. We cannot acknowledge or return your story. Do not send SAEs.
"SAE" は何の略語でしょうか？辞書を見ます。
・Collins Dictionary: abbreviation for stamped addressed envelope: Send two first- class stamps and A5 sae for a full-colour catalogue.
・Cambridge English Dictionary: abbreviation for stamped addressed envelope or self-addressed envelope: an envelope with a stamp and your name and address on it, which you send inside another envelope to an organization when you want a reply: Write to the above address, enclosing an sae.
納得。