US postcard representing a map of California with Santa Clara and San Francisco cities from 1930s 

Very beautiful portrait of a young girl - Belgian printed postcard from 1910s.

Beautiful postcard "The Art of Being a Grandfather - Dandling" - Postcards sent in 1905

French postcard with a daughter carrying a bunch of roses from 1910s.

Postcard legend: "Vive Marie" / "Long live Mary"

Vintage Belgian postcard with young girl with a bouquet of flowers from 1900s.

Postcard legend: "Vive Marie" / "Long live Mary"

Embossed Belgian postcard depicting a little girl chasing butterflies from 1900s.

Belgian postcard - Reproduction of a painting by the artist  Ethel Parkinson from 1910s

Belgian postcard - Reproduction of a painting by the artist  Ethel Parkinson from 1910s

Belgian postcard of a group of children playing around a duck pond from 1910s

Belgian postcard of a little girl holding a little boy by the side of a canal from 1910s

Belgian postcard of a young kid carrying a watering can from 1900s. Postcard sent in 1909.

Two Belgian postcards representing cute kids from 1910s.

Vintage Belgian postcard with a bouquet of roses and lily of the valley from 1900s.

Vintage Belgian postcard with a young child with two baskets of flowers from 1910s.

Vintage Belgian postcard representing a young woman with a bouquet of flowers sent in 1919.

Postcard legend: "Heureuse fête"

Vintage Belgian postcard representing a young girl and her mother teaching her to knit sent in 1913. Back probably written in Dutch. 

Postcard legend: "Knitting lesson"

Vintage Belgian "Bonne fête" postcard with young girl with a bouquet of flowers from 1909. Unwritten back. 

In Europe and probably in other countries, it is tradition to wish a "bonne fête" to relatives and friends according to their first name and the calendar of saints. It is a tradition dating from the 16th century that lasted until the beginning of the 20th century and is gradually being lost.

Vintage French postcard with a small bouquet of pansies from 1920s. Written back. 

Postcard legend: "Des pensées et mon coeur" / difficult to translate, in French the term "pensée" means both "pansy" and "thought".

Vintage Belgian postcard with young girl with a bouquet of flowers from 1910s. Written back. 

Postcard legend: "Vive Marie" / "Long live Mary"