Sadducees
2 of the 7 encyclopedias on this shelf carry an entry for Sadducees. Both are reproduced below, so you can see where they agree and where they differ.
Collier's New Encyclopedia (1921)
one of the three Jewish sects. The current tradition, which was first published by Rabbi Nathan in the 2d century, is that the Sadducees derived their name from a certain Zadok, a disciple of Antigonus of Soko (200-170 b. c.). The Zadok from whom they derive their name was the priest who declared in favor of Solomon when the High Priest Abiathar adhered to Adonijah (I Kings i. 32-45). His descendants had a subsequent pre-eminence (Ezek. xl. 46, xliii. 19, xliv. 15, xlviii. 11). Not that the Sadducees became a party so early, or that Zadok was their founder; but that some of them may have been his descendants, and all admired his fidelity to the theocratic government, even when the head of the priesthood had gone astray. It was their desire to be equally faithful. All the Jews admitted that the Mosaic law was given at Sinai by Jehovah Himself. Most of the people, with the concurrence and support of the Pharisees, believed that an oral law of Moses had similarly come from God. The Sadducees rejected this view, and would accept nothing beyond the written word. They were the Protestants of the older economy. consequences followed. In the Certain Mosaic law there is no reference to a state of rewards and punishments in a future world. When Jesus proves the resurrection from the Pentateuch, He does so by an inference, there being no direct passage which He can quote (Matt. Sadducees therefore xxii. 31, 32). The denied the resurrection from the dead (verse 23). The doctrine of a future world is taught in some passages of the Old Testament, especially in Dan. xii. 2, their 3, etc., which should have modified belief. That it did not do so can be explained only by supposing that they ata higher inspiration to the Motributed of the Old saic law than to other parts Testament. Epiphanius (Hœres., xiv.) assert and some other of the fathers that the Sadducees rejected all the Old Testament but the Pentateuch. Probably, how ever, these writers confounded the Sadducees with the Samaritans. In Acts xxiii. 8, it is stated that they say that "there is neither angel nor spirit." How apthey could ignore all the angelic pearances in the Pentateuch (Gen. xvi. 7, 11, xix. 1, etc.) is hard to understand. Perhaps they may have believed that, though angelic appearances once took place, they had now ceased. It is surprising that a sect with these views should, at least at one time, have almost monopolized the highest places in the priesthood; yet such was the case, at iv. 1-6). But, least temporarily (Acts with all their sacred office and worldly rank, they could have had no hold on the common people. It is probable that, when Christianity spread-even among its Jewish opponents-a belief in the resurrection, the Sadducees must have still further lost ground; but they ultimately revived, and still exist, under the name of KARA- ITES (q. v.).
Aiton's Encyclopedia (1910)
sad'u-sez, a religious and political party among the Hebrews. Our knowledge of them is derived chiefly from the New Testament and the writings of Josephus. Little is known of their origin, rise, or disappearance. They appear to have been bitterly opposed to the Pharisees, whom they regarded as fanatical and over zealous. The Sadducees denied the doctrine of the resurrection. They disputed the existence of angels and spirits. They formed at one time a powerful political party, but at the time of Christ their contentions had degenerated into mere scholastic quibblings.