| Image Link
| Description
| Comments / Questions
| Additional Web Information and Photos
|
Click for larger photo
Source: Personal Collection
|
1930's Card File Microphone.
|
Purchased on eBay in 1999.
|
No other information found on the web.
|
Click for larger photo
Source: Personal Collection
|
Detective Dictograph in Case (1907).
|
Additional photos:
|
Here is another website devoted to the
Detective Dictograph with excellent photos while this one is a
website on the history of
the Dictograph company.
|
Click for larger photo
Source: Personal Collection
|
Federal Surveillance Briefcase (1939).
|
Additional photos:
|
Limited research indicates no other information available on the web.
|
Click for larger photo
Source: Personal Collection
|
Microphone with thin wooden membrane - circa 1890.
|
Microphone with thin wooden membrane - ca 1890 - typically hidden behind tapestry or paintings.
Additional photos:
|
Limited research indicates no other information available on the web.
|