A collection of 4,741 word fragments that have a unique completion is described. All word fragments are specified by two letters (e.g.,{\_}{\_}Q{\_}{\_}U{\_}{\_}can only be completed by the word LIQUEURS). The words completing these fragments range in length from five to nine letters. The fragments are unique with respect to a pool of 146,205 words, which helps rule out the possibility that obscure words could be used as a completion to the fragments. The collection of fragments as well as the words that complete them is available in ASCII format on computer disks or in printed form.