This project produced tape-lifts of treated and untreated latent fingerprints (and reference buccal swabs) from a minimum of 15 volunteers on both a non-porous and porous substrate, using both standard modern-day handling and historical methods. It determined the best methods for upstream laboratory processing for latent fingerprints that have been tape-lifted and backed on paper backing cards, including an evaluation of DNA sampling techniques, swab diluents, and extraction/purification methods. It used best practices established empirically in the aforementioned goals to assess source attribution of major and minor profiles generated from the samples. This project reports providing some evidence that should encourage laboratories and investigators to consider pursuing DNA analysis from archived latent fingerprints, particularly if they are the only potential source of physical or biological evidence. Viable DNA was found to be available in some archived latent fingerprint samples, as well as in the surface area left behind after swabbing, and it can be retrieved for DNA profiling. 51 references
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