If you look at HG Wells in the series, I believe they were trying to make him look like he was dressed from that time. In Soul Mates, he is wearing some sort of hat (is it a bowler?), so there is one of the kinds of hats worn during that time period.
Beyond that, Wikipedia would have some info.
I think, therefore, I get bananas.
When in doubt, think about time travel conundrums. You'll confuse yourself so you can forget what you were in doubt about.
What's the difference between ignorance, apathy, and ambivalence?
I don't know and I don't care one way or the other.
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