This is a payment a donor makes to a charity partly as a contribution and partly for goods or services. For example, if a donor gives a charity $100 and receives a concert ticket valued at $40, the donor has made a quid pro quo contribution.
Publication 78, Cumulative List of Organizations described in Section 170(c) of the Internal Revenue Code of 1986, is a list of organizations eligible to receive tax-deductible charitable contributions.