one featuring the cover art of the Grateful Dead's eponymous album that was painted in the 1970s. Today the house hosts a number of social events throughout the year, including a termly open mic night, featuring music performances by students, a termly formal dinner, and an interhouse party known as Apache. The building has space for approximately 70 students, while the house had a total membership of about 110 at commencement in 2019. Two graduate student resident associates live in apartments in the house. Ricketts remains the only house not to offer social membership. A referendum to add social membership in 2018 was defeated by vote of 16 in favour, 43 against, and 3 abstentions. Notable Skurves and Rowdies Leo James Rainwater (1939, Physics) – physicist, Nobel laureate, Pupin Professor of Physics at Columbia University Vernon L. Smith (1949, Electrical Engineering) – economist, winner of the Nobel Memorial Prize in Economic Sciences, professor at the University of Arizona, George Mason University, and Chapman University Carl V. Larson (1952, Mechanical Engineering) – former vice-president of Versatec, an electrostatic printing company acquired by Xerox Anthony Leonard – Theodore von Kármán Professor of Aeronautics, Emeritus, at Caltech (1959) Bradley Efron (1960, Mathematics) – pre-eminent mathematical statistician, MacArthur award, Presidential Medal of Science Cleve Moler (1961, Mathematics) – inventor of Matlab Robert McEliece – Allen E. Puckett Professor and Professor of Electrical Engineering at Caltech (1964) B. Thomas Soifer – Harold Brown Professor of Physics, Emeritus at Caltech; Director, Spitzer Science Center (1968) Christopher Dede – (1969, Chemistry) educational researcher; Timothy E. Wirth Professor in Learning Technologies at the Harvard Graduate School of Education Paul W. K. Rothemund (1994) – MacArthur Fellow, Research Professor of Bioengineering, Computing and Mathematical Sciences, and Computation and Neural Systems at Caltech Edray Herber Goins (1994, Mathematics, Physics) – Mathematician specializing in number theory and algebraic geometry, professor at Purdue University and later Pomona College C. Kevin Boyce (1995, Biology, Literature) – MacArthur Fellow, paleobotanist, professor at Stanford University Nicholas R. (Nick) Hutzler (2007, Mathematics) – Assistant Professor of Physics at Caltech Thomas (Tim) J. Litle IV – Founder and Chairman, Litle & Co. North houses Lloyd House Lloyd House is smallest of the three north houses. The north houses were constructed in 1960 with funds provided by the Lloyd Foundation and other donors. Lloyd House was named in memory of Ralph B. Lloyd and his wife, Lulu Hull