A few nice picture images I found:
TeleMatic CR-70 Picture Tube Booster
Image by splorp
Front
As the cathode ray tube in a television ages, it can become dimmer due to less efficient electron emission. An inexpensive fix is to install a booster transformer between the base and the connector of the picture tube. The booster supplies a moderate, continuous overvoltage to the tube, reactivating the electron emitter and thus extending the life of the picture tube.
The text on this particular unit reads as follows:
Improve Your Picture With The
TeleMatic
“5 In One”
Picture Tube Booster
Model CR-70
Telematic Ind. B’klyn 21, NY
5 In One
1. Series
2. Parallel
3. Isolation
4. Electro - Magnetic
5. Electro - Static
Set Switch (P - For Parallel) (S - For Series)
New Living Pictures
Image by National Library of Ireland on The Commons
It's killing me that I can't read the detail on the posters outside the Rotunda Round Room, but thought you might like this one in any case...
There're our gorgeous "bollards" again, and I'm wondering if the garland on the monument can help at all with dating?
Date: Circa Spring 1913 (thank you Denis Condon)
NLI Ref.: EAS_1681