The Callendar Family Chronicles Series

The adventures of the seven Callendar children. Their father is named Augustus, so they really could have expected their names to be unusual.
Books in the The Callendar Family Chronicles series:
Friday’s Tunnel (1959)

A mystery involving February and her brother Friday, who is digging a tunnel in the back yard and the large Callendar family and something to do with international intrigue.
February’s Road (1961)

A new road is planned to run through the Callendar farm, but February is determined to stop it.
ismo (1964)

The Callendar family are again caught up in international intrigue.
February’s Road (1966)

A new road is planned to run through the Callendar farm, but February is determined to stop it.
ismo (1967)

The Callendar family is again caught up in an international intrigue.
Seven Sunflower Seeds (1969)

The Callendars investigate the strange effects of Vita-Mix breakfast cereal on race horses. And what does Edward Lear have to do with it?
Read online at archive.org.
Samson’s Hoard (1973)

The Callendars are caught up in a mystery, this time closer to home.