The date written on the cover is September 1886. This date is consistent with Charles Bertram standing in for de Kolta. The first date that the de Kolta Vanishing Lady illusion was performed at the Hall was 7 August 1886, according to Jenness.

The bill includes ‘Arcana’ which was first produced on 5 November 1887, according to Jenness. ‘Arcana’ continued for at least 8 months into 1888. The June 1888 date written in ink on the cover is therefore probably correct.

Maskelyne and Cooke Egyptian Hall programme. Someone has written on the cover of the programme the date 1875. This would be consistent with Psycho being in the programme. Psycho was introduced by Maskelyne on 13 January 1875. In the early days, Psycho only played whist, as on this programme. Later on, Psycho performed other tasks as well as whist.