But it is the the 19th-century works that prove of particular interest.

That proved true, of course, but without him in a leading role.

I want those people to understand this: an early death proves of nothing.

This time, however, he proved of no use at all.

The record has proved of great interest to later family historians.

Our engineering skills may prove of value to your army.

I can promise you that my analysis will prove of value.

The balancing act is likely to have proved especially difficult of late.

The spy had proved of little help in the end.

"But the woman is certainly dead, and I do not believe that these details are likely to prove of much importance."