The copies of Redhouse's Turkish Lexicon (1857, 1890, Arabic script first before Redhouse's transliteration) that the Library possesses are not in good shape, but very difficult to replace. I have withdrawn two from service because it is so fragile but in the meantime please try to use the free e-book which is available from Internet Archive. It might not be as handy as the print version, but at least you can use it outside of the Library. The link is on this catalogue record.
NB More modern Turkish dictionaries based on Redhouse's original are still available in the Library as usual, this announcement only refers to the Bernard Quaritch editions.