This “whimsical alphabet” is a sampler of miscellaneous ornamented capitals. Most but not all letterforms have bi- or trifurcated serifs, all but N have a solid south-east shadow. This piece of lettering was reproduced in the first volume of Lettera from 1954, originally without credits. The eighth edition mentions it was “redesigned and completed” by Armin Haab. No historical source is credited. Chances are it was compiled from various 19th-century lettering samplers. Photo-Lettering adopted the design for phototypesetting, and named it Jester Ornamental.
The letter salad is nicely echoed by the image underneath, showing a cross-legged Ayers juggling with all kinds of items that seem to stem from a Victorian-themed book of clip art.