national museum of american history:
"Barometer" Glass plate
national museum of american history:
"Barometer" Glass plate
national museum of american history:
Copper disc
national museum of american history:
Copper disc
national museum of american history:
Copper disc
national museum of american history:
Copper disc
national museum of american history:
"Little Lamb" glass plate
national museum of american history:
"Little Lamb" glass plate
national museum of american history:
Wax on board
national museum of american history:
Wax on board
national museum of american history:
Recovering sound
national museum of american history:
Recovering sound
national museum of american history:
Recovering sound
national museum of american history:
Recovering sound
national museum of american history:
Recovering sound