A select set of English nouns can head adverbial NPs – NPs that can act as adverbs without being preceded by a preposition. These ‘adverbial nouns’ also can be modified by prepositionless adverbial non-wh relative clauses. An analysis is presented in a categorial grammar framework, employing a conjunctive type structure to describe the behavior of adverbial nouns. It is suggested that adverbial nouns select non-wh adverbial relative clauses as complements; lexical rules are written to allow such selection. Finally, some remaining issues are surveyed concerning adverbial nouns in particular and conjunctive categories in general.