I had a few of the books as well as a kid back in the 80s, and yes I remember them as Berenstein. But I can't say with 100% certainty that it was actually spelled Berenstain but pronounced as the former. I for sure never remember anyone calling them Berenstain, always pronounced as Berenstein. The differences between a cursive e and a are negligible, and when the e variation is the more common form, it's not a hard thing to happen. Look at all the surnames that end with stein, and how many with stain?

I'm not trying to say it's not, God knows with all the trickery perpetrated on us, and CERN coming online about the same time the Mandela Effect kicked in. But I do see stain vs stein can have a likely "reasonable" explanation.

I had a few of the books as well as a kid back in the 80s, and yes I remember them as Berenstein. But I can't say with 100% certainty that it was actually spelled Berenstain but pronounced as the former. I for sure never remember anyone calling them Berenstain, always pronounced as Berenstein. The differences between a cursive e and a are negligible, and when the e variation is the more common form, it's not a hard thing to happen. Look at all the surnames that end with a steen sound, and how many with a stain?

I'm not trying to say it's not, God knows with all the trickery perpetrated on us, and CERN coming online about the same time the Mandela Effect kicked in. But I do see stain vs stein can have a likely "reasonable" explanation.

I had a few of the books as well as a kid back in the 80s, and yes I remember them as Berenstein. But I can't say with 100% certainty that it was actually spelled Berenstain but pronounced as the former. I for sure never remember anyone calling them Berenstain, always pronounced as Berenstein.

I'm not trying to say it's not, God knows with all the trickery perpetrated on us, and CERN coming online about the same time the Mandela Effect kicked in. But I do see stain vs stein can have a likely "reasonable" explanation.