WW2 Comet Line agents Pat O’Leary, Pat Cheramy and Suzanne Warenghem signed FDC

RAF Escaping Society cover signed by Albert Geurisse (aka Pat O’Leary, founder of the O’Leary Line), Eleanor Maud Hawkins, also known as Pat Cheramy and Suzanne Werenghem, also known as Suzanne Charise, hers is a quite rare signature