The Smith-Corona Mail Call MT is a cordless, miniature, transistorized tape recorder for producing “talking letters” by means of a cartridge half the size of a packet of cigarettes and which can be mailed in an ordinary envelope.

The Smith-Corona Mail Call MT is a cordless, miniature, transistorized tape recorder for producing “talking letters” by means of a cartridge half the size of a packet of cigarettes and which can be mailed in an ordinary envelope.