Exp : Poincaré, Henri Site: Caen Date: 1881-06-15
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : Your letter proves

Exp : Poincaré, Henri Site: Caen Date: 1881-06-22
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I have not yet received the items

Exp : Poincaré, Henri Site: Caen Date: 1881-06-27
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : When I received your postcard

Exp : Poincaré, Henri Site: Caen Date: 1881-07-05
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I received your letter and read it

Exp : Poincaré, Henri Site: Caen Date: 1881-12-08
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I am infinitely grateful

Exp : Poincaré, Henri Site: Paris Date: 1881-12-17
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I have the honor of sending you

Exp : Poincaré, Henri Site: Paris Date: 1882-01-14
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I received the page proofs

Exp : Poincaré, Henri Site: Paris Date: 1882-03-28
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : You appended a note to my article

Exp : Poincaré, Henri Site: Paris Date: 1882-03-28
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : Recently you were good enough

Exp : Poincaré, Henri Site: Paris Date: 1882-04-04
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I have just received your letter

Exp : Poincaré, Henri Site: Paris Date: 1882-04-07
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I have the honor of returning

Exp : Poincaré, Henri Site: Paris Date: 1882-05-12
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I am late in responding

Exp : Poincaré, Henri Site: Paris Date: 1882-05-18
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : Your last letter interested me greatly

Exp : Poincaré, Henri Site: Paris Date: 1882-09-22
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : Here are a few details

Exp : Poincaré, Henri Site: Paris Date: 1895-06-01
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : Will you be in Göttingen

Exp : Poincaré, Henri Site: Paris Date: 1895-06-07
Recipient/Object: Klein, Felix Site: Leipzig
Source : Henri Poincaré Papers Incipit : I am very pleased to learn