However, Obama had heavily outspent Clinton in previous contributions to superdelegates through their political action committees.

This paper built on the previous individual contributions that both authors had been making in the previous two decades.

(You can find my previous contribution on the same subject here.)

His firm allows him to return to work out of deference to his previous contributions to the firm's success.

Over the years, Reed added more than $200,000 to her previous contributions, served on the Board of Trustees and received an honorary degree in 1939.

I had the impression that his previous contributions did not exactly help us to convince the Irish.

I would first like to correct a choice of words in my previous contribution.

They are awaiting reports from the staff detailing what happened to previous contributions that they believe were misspent.

His previous annual contributions to Carnegie have ranged from $5 million to the $15 million he gave last year.

My previous contribution was not precipitated by pro-Scottish bias.