(click/touch triangles for details)
- My dear fellow, you have been invaluable to me in this as in many other cases, and I beg that you will forgive me if I have seemed to play a trick upon you.Chapter 12 — Death on the Moor (15% in)
- He has given me an extra pair of eyes upon a very active pair of feet, and both have been invaluable.Chapter 12 — Death on the Moor (21% in)
There are no more uses of "invaluable" in The Hound of the Baskervilles.
Typical Usage (best examples)