My "ligue des pensées" (LDP), AKA "Gedankenbund", AKA "League of Thoughts" (LoT) is certainly based on storing analog signals on refreshing electrostatic drums and projecting the image (images!) on CRTs. There's a nice railway print of the futuristic main hub of the British part of the LoT at New Castle, exposing the stylized cylindrical shape of the storage drums in its main tower (nicely lit in electric blue by high the voltage discharge of the drums inside). A delicate chapter in the history of the LDP is the niche of the "valses roses", which inevitably evolved into a major business. In many countries some opposition of mostly moral objection arose, especially in Germany, where a rising NSDAP feared for the health of the populus and for the sanity of German men who were exposed to the finer details of the anatomy of foreign women, which in turn lead to its smashing defeat in the 1933 election… :-)
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Edit, on the technology of the LoT: This was some of a joint European effort. A crucial part was the storage of the analogue image signal on a continuously refreshed electrostatic drum, invented by Dr Ludwig Chevenmüller in the early 1920s. A major breakthrough was then the contribution of a young Tommy Flowers, who came up with a way to combine discrete signals suitable for relay-based automatic dialling with the analog signals that provided the content. In a somewhat parallel strain Thierry du Pont du Lac invented his "lecteur discret", which did much the same for character based signals in Baudot code, which was eventually combined in the vertical blank of the analog image signal and stored on the terminal side on a second drum, to be superimposed by a tiny typesetting machine and an array of electrostatic lenses onto the analog Chevenmüller image. (Alternatively, the combined image could be redirected onto a third drum, from which it could be printed using a technique similar to stencils. Seasoned users of the LoT may remember the typical smell quite well.) But the LoT only really took of, when BASF came up with a way to compress the Chevenmüller signal into rapid bursts, which enabled the rather astounding speed of the network.
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Edit, on the technology of the LoT: This was some of a joint European effort. A crucial part was the storage of the analogue image signal on a continuously refreshed electrostatic drum, invented by Dr Ludwig Chevenmüller in the early 1920s. A major breakthrough was then the contribution of a young Tommy Flowers, who came up with a way to combine discrete signals suitable for relay-based automatic dialling with the analog signals that provided the content. In a somewhat parallel strain Thierry du Pont du Lac invented his "lecteur discret", which did much the same for character based signals in Baudot code, which was eventually combined in the vertical blank of the analog image signal and stored on the terminal side on a second drum, to be superimposed by a tiny typesetting machine and an array of electrostatic lenses onto the analog Chevenmüller image. (Alternatively, the combined image could be redirected onto a third drum, from which it could be printed using a technique similar to stencils. Seasoned users of the LoT may remember the typical smell quite well.) But the LoT only really took of, when BASF came up with a way to compress the Chevenmüller signal into rapid bursts, which enabled the rather astounding speed of the network.