Board of Governors of the Federal Reserve System (U.S.), 1935-. "Real Estate Investment Trusts, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "May 15, 1978," Z.1 Financial Accounts of the United States (1978-05-15) : 35-35. https://fraser.stlouisfed.org/title/93/item/69072/toc/479174 , accessed on April 17, 2024.