John Brashear Time Capsule - Al-Paslow
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Letter by Professor Hermann von Helmholtz. Prominent German Physicist  

"You are most respectfully asked to deliver at your soonest convenience two flat metal-mirrors at 7 to 8 centimeters diameter. These are intended to be examined for their selective absorption in different sorts of (glas?). It is therefore required to receive most colorless mirrors. For this reason you are kindly asked to send us the very best of your mirrors in the required number and dimension."

The letter is signed "Physikalisch-Technische Reichsanstalt, Department 1, v.Helmholtz

Letter translated by -
 Stefan Thiele from Wiesbaden/Germany, classic telescope enthusiast.
ait@gmx.net

Letter by Professor Hermann von Helmholtz. Prominent German Physicist

"You are most respectfully asked to deliver at your soonest convenience two flat metal-mirrors at 7 to 8 centimeters diameter. These are intended to be examined for their selective absorption in different sorts of (glas?). It is therefore required to receive most colorless mirrors. For this reason you are kindly asked to send us the very best of your mirrors in the required number and dimension."

The letter is signed "Physikalisch-Technische Reichsanstalt, Department 1, v.Helmholtz

Letter translated by -
Stefan Thiele from Wiesbaden/Germany, classic telescope enthusiast.
ait@gmx.net

ProfessorHermannvonHelmholtzGermanPhysicist Stefan Thiele