Zhukov had begun writing his memoirs "Reminiscences and Reflections" (Воспоминания и размышления) in 1958. He now worked intensively on them, which together with steadily deteriorating health, served to worsen his heart disease. In December 1967, Zhukov had a serious stroke. He was hospitalized until June 1968, and continued to receive medical and rehabilitative treatment at home under the care of his second wife, Galina Semyonova, a former officer in the Medical Corps. The stroke left him paralyzed on his left side and his speech became slurred and he could only walk with assistance. His memoirs were published in 1969 and became a best-seller. Within several months of the date of publication of his memoirs, Zhukov had received more than 10,000 letters from readers that offered comments, expressed gratitude, gave advice, or lavished praise. Supposedly, the Communist Party invited Zhukov to participate in the XXIV Congress in 1971 but the invitation was rescinded.