Arkivism
You have heard [...] Sollenburger over the radio [...] time signals from the U.S. Observatory at Wash. Apparatus is one of the most powerful in the world
Public domain

You have heard [...] Sollenburger over the radio [...] time signals from the U.S. Observatory at Wash. Apparatus is one of the most powerful in the world

Harris & Ewing · 1924-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

Subjects
glass negativesunited statesdistrict of columbiawashington (d.c.)
Credit lineYou have heard [...] Sollenburger over the radio [...] time signals from the U.S. Observatory at Wash. Apparatus is one of the most powerful in the world. 1924-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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