AAVSO observations of eight
eclipsing stars indicate a discrepancy when compared to the elements listed in
the fourth edition of the General Catalogue of Variable Stars (GCVS) (Kholopov
et al. 1985). New periods for XZ Aql, AL Cam, R CMa, U CrB, DK Cyg, V704 Cyg,
RW Mon, and TX UMa have been calculated.