Volgadon hasn't posted on these matters because Volgadon was out of the country for a couple of weeks.
Maslow/v is down to spelling conventions. As has been pointed out, there is no 'w' in Russian, but a 'v'. It isn't as flat sounding as an English 'v'. HOWEVER, surnames ending with a 'v' should sound more like an 'f', because of the Russian tendency to soften endings. Taking Maslow, a surname deriving from the word for oil, it could be rendered properly as either Maslow, Maslov, or even Masloff. This would be fine if he were Russian, but as his parents emigrated, then the form chosen back then should be used.
Personally, I preffer 'v' as 'w' is too Polish and 'ff' too French.

Don, I would say the spelling was Polonicised! Huge number of Polish immigrants, that's why.