on stellar spectroscopy at Berkeley during the 1954–55 academic year. Bidelman served on the program committee for the American Association for the Advancement of Science and Astronomical Society of the Pacific meeting in 1955. In 1953, Bidelman was the first to describe the hydrogen–deficient carbon star group, although Hans Ludendorff had found the appearance of weak hydrogen in R CrB in 1906. In 1951, Bidelman informed other astronomers of his intentions to publish a catalogue with data for all known emission-line stars and requested they contribute data to be incorporated into it. He researched emission-line stars for his catalogue and bibliography at Yerkes Observatory (Wisconsin) and McDonald Observatory (Texas), and spent six weeks during the summer at the Mount Wilson and Palomar observatories (California), funded by the Department of Naval Research. While at Yerkes, Morgan, Strömgren, and Chandrasekhar had encouraged Bidelman to prepare such a catalogue, and his catalogue and bibliography of 1,640 middle and late-type emission-line stars was among the ten most-cited papers in astronomy in 1954. Bidelman's catalogue included many stars with Ca II H and K emission. In 1996, Helmut Abt researched which papers published in 1954 were cited most frequently from 1955 to 1995, and Bidelman's Catalog and Bibliography ranked among the top four. Bidelman served on the Astronomical Society of the Pacific's Nominating Committee and Publications Committees in 1955. When Seth B. Nicholson, Chairman of the Publications Committee for thirteen years retired, he nominated Bidelman as the next chairman. Bidelman resigned from the Nominating Committee, and became the Editor of the Publications of the Astronomical Society of the Pacific. the scientific journal of the ASP, which gives the gives the Bruce Gold Medal. In 1957, the Directors discussed but did not act on making the editor a salaried position. In 1958, the Publications Committee published over 100 papers, over 20 book reviews, and two symposia. Re-elected to the Board of Directors, Bidelman was authorized to spend up to $1,000 for editorial assistance in 1959, and they published over 90 papers from ~38 institutions, 15 book reviews and a symposium. His report noted it was a time-consuming task, made more difficult because he had been out of the country for two months that year. in 1960, they published six issues including 100 papers from ten countries, other articles and book reviews, and fulfilled reprint orders. He was Third Vice President of ASP in 1961, and they