Is DNA Left on Envelopes Fair Game for Testing?
https://www.theatlantic.com/science/archive/2019/03/dna-tests-for-envelopes-have-a-price/583636/?fbclid=IwAR0gRRuWbOb2IQuJ-_fEiO8zzdVIkHQm6g4Ft4RBOucbFttyEctroQUeE3Q