Kaleidakon: 1930s light show

The centre piece of the 1939 Ideal Home exhibition in London was the Kaleidakon, what sounds like a proto-psychedelic light show.

'One of the many sights of the Ideal Home Exhibition now drawing to a close at Earls Court is the huge Kaleidakon, a white and silver tower which raises its head almost a hundred feet above a pool of rippling water. Here, with the aid of Quentin Maclean, at the console of a Compton organ, and an expert on a light console, duets in sound and light are given daily. As the sound of music emerges so the tower is lit by an ever changing harmony in colour in bright and pastel shades closely allied to the humour' (Gramophone magazine, May 1939)

Advert from South London Advertiser, April 21st 1939
'The Kaleidakon, world's greatest musical instrument combining sound and colour'

There's some further technical information at the Strand lighting archive (from where photograph below was sourced): 'The Kaleidakon: 70 feet, 230kW tower in the Daily Mail Ideal Home Exhibition, Earl's Court with a 72-way Light Console and Compton Organ for Colour Music'

Loie Fuller (Joseph Rous Paget-Fredericks Dance Collection)

The Joseph Rous Paget-Fredericks Dance Collection at the University of California consists of 'approximately 2,000 original drawings, paintings and photographs, as well as scrapbooks and other dance memorabilia', collected from around 1913 to 1945.

There are some fantastic images online of dancers from this period, such as paintings of Anna Pavlova and photos of Chicago-born Loie Fuller (1862-1928). The latter was not only a pioneer of free dance, but of the lightshow - as early as the 1890s she was experimenting with different coloured gas lighting on silk in her dance performances. She 'held many patents for stage lighting, including the first chemical mixes for gels and slides and the first use of luminescent salts to create lighting effects' (source).

After seeing Fuller perform at the Folies-Berigere in Paris in 1893, the symbolist poet Stéphane Mallarmé wrote:

‘Her performance, sui generis, is at once an artisitic intoxication and an industrial achievement, In that terrible bath of materials swoons the radiant, cold dancer, illustrating countless themes of gyration. From her proceeds an expanding web – giant butterflies and petals, unfoldings – everything of a pure and elemental order. She blends with the rapidly changing colours which vary their limelit phantasmagoria of twilight and grotto, their rapid emotional changes – delight, mourning, anger; and to set these off, prismatic, either violent or dilute as they are, there must be the dizziness of soul made visible by an artifice' (quoted in What is Dance?: Readings in Theory and Criticism By Roger Copeland, Marshall Cohen, Oxford University Press 1983).

(thank to Fed by Birds for pointing me in the direction of this archive)