John Almeida has come into a family law office to meet with Attorney Willis.  He is seeking a divorce from his wife of ten years.  Throughout their marriage she has managed all their financial affairs and he has been the primary caretaker of the children.  He suspects that she has several assets including investments, bank accounts, and a pension plan among others.  He wants to find out information about these assets but doesn’t have a lot of money to invest in discovery.  He also doesn’t trust his wife to tell the truth about what she owns.  Attorney Willis is most likely to recommend which of the following formal discovery methods as a cost-effective and useful tool for gathering information that will generate other discovery requests even though it does not provide any opportunity for the requesting party to assess the respondent’s credibility and demeanor as a witness.