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The National Institute of Standards and Technology (NIST) Evaluation of Latent Fingerprint Technologies Extended Feature Sets (ELFT-EFS) consists of multiple ongoing latent algorithm evaluations. This report describes the design, process, results, and conclusions of ELFT-EFS Evaluation No. 1; an accuracy test of latent fingerprint searches using features marked by experienced human latent fingerprint examiners, in addition to automatic feature extraction and matching (AFEM). There has never previously been an evaluation of latent fingerprint matchers of this scale in which systems from different vendors used a common, standardized feature set. The results show that searches using images plus manually marked Extended Features (EFS) demonstrated effectiveness as an interoperable feature set. The four most accurate matchers demonstrated benefit from manually marked features when provided along with the latent image. The latent image itself was shown to be the single most effective search component for improving accuracy, and was superior to features alone in most cases. For most matchers, the addition of new EFS features provided an improvement in accuracy.