WishMessages.com and Birthdays-Poems.both have poems that are appropriate for an 80th birthday. Appropriate poems depend on the personality of the individual. Some may appreciate sentimental, heartfelt poems while others may prefer something humorous. An appropriate poem celebrates their long life and wishes them many more to come.
BirthdayMessages.net has 80th birthday messages appropriate for a card. There is a wide variety of messages including funny, sweet and historical themes. MyBirthdayFacts.com lists interesting things that happened on a person's birth date. For example, it lists fun facts like the historic price of gas, famous events that happened and famous people also born on that day.