I read that a teddy bear is in one ep. The person writing the comment stated there were no teddy bears till the 1900s but in actuality there were of course bear dolls in the 1800s so just as long as no one called it a teddy there was not much anachronism.

Hoss shows his beautiful fiancee a gambling slot machine in one ep and I read that the first vending machine was a chocolate bar machine in the mid-1880s but maybe just maybe they were invented locally in parts of the USA and Canada sooner!