One of the very many information leaflets issued by the London Underground group in the late 1920s and early 1930s that conform to a generic design 'pattern' and often, like this, printed at the noted Curwen Press in Plaistow. This is for the loan of free lantern slides that allowed the borrower to use slide sets and notes to give one of five lectures as shown on the cover.
The leaflet also gives details of how to obtain the lecture sets, collection and return. The very Curwen 'feel' to this item includes the decorative border and the use of Vesta typeface for titling; there's no sign of the 'corporate' Johnston here as is often the case in such 'jobbing' items commissioned by the company. Undated it has a 1932 print code and a later issue, from 1934, by London Transport, included a fine vignette possibly by Bawden.