According to this Wyatt is the height of a 3yr old at 18months and Keegan is 1inch off the height of a 4yr old :-)
"Average" weight and height of children, babies to teenagers.
Baby clothes size chart
Height and weight chart for baby boys from the center for disease control (cdc)
This is such a cute idea. Taking your child's measurements and displaying them in a shadow box as a cute keepsake.
height weight chart for baby boys
Printable Height Weight Chart for Boys
Really cool weight gain calculator. You type in your starting weight and it tells you the minimum, maximum, and avg, you should be each week.