Model 10 F

Note:  This machine was used by the FCC in the 1960's for Morse code tests.  The first three of the following FCC Memos were the old blue dittos like you used to see in grade school (if you are old enough, that is.....).  Since they are very faint I tinkered a bit with the contrast.

FCC 12/27/66 Memo  (110K) FCC 5/15/67 Memo  (229K)
FCC 5-31-67 Memo  (166K)

FCC 5-14-69 Memo  (36K)

ATKO Manual  (409K)