vacuum tube / Duke Digital Repository

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1. "Experiment with every type of vacuum tube has convinced us of the superiority of RCA Radiotrons. We not only use them for testing the performance of Stromberg Carlson instruments, but we recommend them for use in all of our sets."

Date:: 1929
Format:: advertisements
Collection:: Ad*Access

2. 100-15-233. Acme Sanitary Services. Thermometer, undated

Date:: unknown
Collection:: Richard Pollay Acme Advertising Collection

3. No matter how you use it... electronic equipment is no better than the tubes it employs

Date:: 1944
Format:: advertisements; drawings (visual works)
Collection:: Ad*Access

4. The ancient tools of the trade are not enough

Date:: 1944
Format:: advertisements; drawings (visual works)
Collection:: Ad*Access