Is it okay to ask for book recommendations on a certain topic if there isn't anything directly on said topic in the book list?

(sorry if it is, read through the posting rules on the side bar but didn't see anything specifically about this)

Edit: since a mod was kind enough to respond with yes, I reckon I'll edit this in case anyone else sees it.

I'm interested in the Qing dynasty, as it coincides my the period in US/European/world history I'm most interested in.

There's a book in the list on the Boxer Rebellion,and I'm currently reading a pretty interesting book on the Taiping Rebellion. I'm more interested in event before this however, maybe pre 1850? Or just a general period/dynasty book.

After I feel like I've exhausted the Qing period, I hope to move into Sun Yat-sen and Chiang and Mao and the 1911-1950 period, but it seems like there's a lot of literature on that time which is a lot easier to find.