According to the Bureau of Electronic Publishing (Montclair, New Jersey), the two best selling CD-ROM products in 1989 were Shareware Grab Bag by Alde Publishing and PC-SIG Library by PC-SIC. In third place was Grolier's Electronic Encyclopedia, the best selling product in 1988. Microsoft's Bookshelf and Programmer's Library were fourth and fifth, respectively. Other best sellers were McGraw Hill's Science and Technology Reference and the Oxford English Dictionary.