Washburne's cable and telegraphic manual and error detector ..

The Smithsonian catalogs Washburne's cable and telegraphic manual and error detector .. as handbooks, manuals, etc in its Telegraph records.

WHY IT’S INTERESTING

Signed at foot of p. [3]: Washburne & Palmer.

SERENDIPITYA little unexpected

FamiliarWeird

A CLOSER LOOK

The Smithsonian lists the object under Telegraph and dates it 1880.

Signed at foot of p. [3]: Washburne & Palmer.

FOLLOW THE EVIDENCE

Original explanation based on the sources above. Images carry their own reuse terms.