Expression: "Help in doing something"

[Tom]

Hi

None of my dictionaries shows that "help in doing something" is also a possibility like "help to do something" or "help do something" , yet I have often seen it and heard it even from a native speaker. Could you please tell me if the said expression or the following sentences sound correct and natural to you?

[Mister Micawber]

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Yes, they sound fine.
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Native English teacher at Mister Micawber's

[Tom]

Many thanks, MM

...but I would like to continue this discussion. There are more than 50 dictionaries in my college library, but all of them show the following in the entry of help.

[Mister Micawber]

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It still sounds OK to me.
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_________________
Native English teacher at Mister Micawber's

[Molly]

Would you have a problem with these, Tom?

In doing his homework, he needs help.
In improving your vocabualry, these books will help.
In achieving her goals, she receives help.

[Yankee]

Hi Tom

I'd say that you'll hear 'help in doing' primarily when the word 'help' is a noun.
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[Molly]

[Yankee]

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Exactly, Molly. But don't pay too much attention to my input. It seems some people here would rather not have input about usage.
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