re: #257 SanFranciscoZionist

re: #260 000G

Found it, sort of:

“Kin Tongue – A Study of Kin Nursery Terms in Relation to Language Acquisition – With a Historical and Evolutionary Perspective”, by Pierre J. Bancel and Alain Matthey de l’Etang

“Tracing the Ancestral Kinship System: The Global Etymon KAKA
Part I: a linguistic study”, by Pierre J. Bancel and Alain Matthey de l’Etang

“The Global Distribution of (P)APA and (T)ATA and their Original Meaning”, by Alain Matthey de l’Etang and Pierre J. Bancel

Proto-language stuff. Not uncontroversial, IIRC.