Related Clues:

• Letter insert: Abbr
• Ltr. addition
• Cover letter abbr
• Bus. letter accompanier
• SASE, say
• Letter inclusion (Abbr.)
• Acct. statement, at times
• Extra item in an envelope: Abbr
• Bus. letter abbr
• Insertion with a letter (Abbr.)
• Env. inside an env., e.g
• Env. fattener
• Accompanier of a letter inside an env
• Bus. letter insert
• Check in an env., e.g