The datasets stored in this folder summarize polycyclic aromatic hydrocarbon (PAH) reference data, and values collected from Brown Pelican nestlings and breeding adults from 2013-2015 in the Northern Gulf of Mexico at 9 breeding colonies from Texas to the Florida Panhandle. Evaluated PAH included 1,3-dimethylnaphthalene, 1,5-dimethylnaphthalene, 1-methylfluorene, 2,3,5-trimethylnaphthalene, 2,6-dimethylnaphthalene, 2-methylnaphthalene, 3-methylphenanthrene, 9-methylphenanthrene, Acenaphthalene, Acenapthene, Anthracene, Benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, Benzo(g,h,i)perylene, Benzo(k)fluoranthene, Chrysene, Dibenz(a,h)anthracene, Fluoranthene, Fluorene, Indeno(1,2,3-cd)pyrene, Naphthalene, Phenanthrene, Pyrene.