From the CO website:
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Travel Within the U.S.A., including Alaska and Hawaii
Maximum number of 2 checked pieces per ticketed customer that adhere to the following size (measured in linear inches or centimeters, total length + width + height) and weight dimensions:
1st bag not to exceed 70 lbs (31 kg) or 62 linear inches (157 cm)
2nd bag not to exceed 70 lbs (31 kg) or 62 linear inches (157 cm)
For wholly domestic travel, a customer may request to check their carry-on bag at no charge. The maximum weight of the carry-on bag is 40 lbs (18 kg). The maximum combined linear measurement (L + W + H) of the carry-on bag is 45 inches (114 cm).
Additional Baggage
Checked baggage in excess of the free baggage allowance will be charged as follows:
80 USD per piece for the first three additional pieces </font>
According to the on-line Contract of Carriage, the rules are effective Dec. 3, 2001, if you bought your ticket before that date the old rules apply.
[This message has been edited by Old Gold (edited 01-05-2002).]