This volume contains the fifth series of papers reporting experimental results from the various projects of the Design Institute for Physical Properties (DIPPR) of the American Institute of Chemical Engineers (AIChE). Previous data were published in 1996, 41 (6), 1997, 42 (6), 1999, 44 (3), and 2000, 45 (1). Before publication of DIPPR results began in this journal, they were published in ATChE Symp. Ser. 1985, 81 (244); 1987, 83 (256); 1989, 85 (271); 1990, 86 (275); 1990, 86 (279) and DIPPR Data Ser. 1991, No. 1; 1994, No. 2. Six papers in this volume are part of a series of papers that reported work performed by the Bartlesville Thermodynamics Group for DIPPR Projects 821 and 871. These projects have been in operation since 1982 and 1987, respectively. In 1943 a laboratory was established in Bartlesville, OK, by Hugh M. Huffman to measure the thermophysical properties of components of petroleum, jet fuels, and other strategic chemicals. Over the next 55 years this laboratory established an undisputed world renowned reputation for the highest quality measurements on the thermochemical and thermophysical properties of organic and organometallic compounds. The Bartlesville Thermodynamics Group ceased to exist on Nov 8, 1998. The six papers published here represent some of the last experimental work emanating from that laboratory. In a tribute to all of those that contributed to its reputation and in recognition of the laboratory's contribution to science and engineering, we provide its list of publications.