Serial data from 818 normal white American children from the Fels Longitudinal Study have been used to construct tables of 6-mo increments for weight (0 to 18 yr), stature (3.0 to 18 yr), head circumference, and recumbent length (0 to 3 yr). The tables supplement previously published incremental growth charts. The attained growth status of these children has been shown to be very close to that displayed in the National Center for Health Statistics tablets at all ages, and secular trends in the data have been shown to be minimal. Consequently, the present tables should be widely applicable for some time in the future. Guidelines for the use of the tables and interpretation of findings are presented.