Hoffman 2021, personal communication

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
GX-33739 19PL520 (Middleborough Little League) MA 3520 ± 80 -25.7
GX-33768 19PL520 (Middleborough Little League) MA 3400 ± 100 -26.6