Invoking Frida is, simply, a tribute to Frida Kahlo, launched on July 6 2007, the day that would have been her 100th birthday.
The photographs here, collected and curated with love, were taken by many photographers, including: Nicholas Muray, Juan Guzmán, Leo Matiz, Manuel Alvarez Bravo and Lola Alvarez Bravo.
For more on Frida, it is recommended you read Hayden Herrera's marvellous biography of her. To know more about the beginnings of this collection, see this.