This is a set of five 15 cent first day covers/ first day of issue stamps by Fleetwood from June 7,1979.
They feature the National Audubon Society wild flowers including:~ Persistent Trillium. ~ Contra Costa Wallflower. ~ Antioch Dunes Evening Primrose. ~ Hawaiian Wild Broadbean.
One first day cover/first day of issue features all four of these wild flowers.
These covers all have information about the wild flowers on the back of them.
They all measure 6.5" x 3.75" and come in excellent pre-owned condition.