The 'Lustige Blätter' is Darlington's own designation of two boxes of material, though sometimes he used the English 'Fun Box' and the plain 'Mad'. The material is extremely disparate. It includes intentionally humorous or satiric articles, cartoons, parodies, etc. in the form either of reprints and press cuttings of published work, or of manuscript drafts perhaps intended for social occasions. The majority, however, are what appeared 'lustige' to Darlington, i.e. caught his fancy or made him laugh at the time. Thus, while some of the material would probably be deemed 'cranky' by most readers (secrets of the universe, cures for physical and mental ills, visionary sects, cosmologies) others are as revealing of Darlington as of the authors. In this category would come administrative ineptitudes, ill-timed or mis-directed requests for advice on careers, manuscripts or theories, writings by some of Darlington's friends or enemies which struck an amused response from him. Much of the material can indeed be paralleled elsewhere. The parodies, cartoons and jokes are similar to those at MS. Darlington c. 3/A.138 or MS. Darlington c. 9/B.15. Several of the letters and accompanying material appear to differ little from, and may emanate from the same correspondents as, those in the main sequence. The difference is in Darlington's judgment of them, and they have therefore been kept as a separate chronological sequence.