Audio recordings of twelve Dutch children in the stage of early words. Longitudinal study. Orthographic and phonetic transcriptions in CHAT. Recordings were made in the child’s home during natural, spontaneous, interactive sessions with one or both of the experimenters and occasionally with one of the parents. Typically a researcher or parent would interact with the child by reading books or playing with toys and occasionally asking the child what s/he saw in books or what s/he was doing. During transcription, unintelligible utterances were left out, however, false starts, errors, breakdowns, etc. were transcribed since they may provide valuable information about the child’s competence. If the child’s utterances contained more than one word, boundaries were placed between the words. No boundaries were placed if it was unclear whether the child knew the different words of which the utterance consisted, such as “what is that?”. This corpus was converted from the original CLPF database. We extend many thanks to Claartje Levelt and Paula Fikkert for their assistance with the conversion process. The transcripts have been linked to the available audio clips for five children: Catootje, Enzo, Eva, Robin, and Tirza.