Tribune April 21 52 Leader of Japans WomenAttacks Morals of GIsTOKYO, April 20 Japan's most prominent women leader appealed Sunday to Mrs. Matthew B. Ridgway to ask the general to bar American servicemen from Japanese brothels and isolate immoral U. S. troops.The plea was in an opening letter to the Allied supreme commander's wife from Mrs. Tamaki Uyemura, member of the National Public Safety Commission which supervises Japanese police activities. She also is head of the Young Women's Christian Assn. in Japan.Mrs. Ridgway could not be reached immediately for comment.The letter, appearing in Fujin Koron or Women's Forum thenation's top women's monthly magazine, was the most critical attack on the morals of the American garrison made publicly by any Japanese since the 1945 surrender.Mme. Ridgway, the letter began, Do you happen to know of the great number of American soldiers patronizing Japanese prostitutes?Step into Tachikawa a U. S. air base center in Tokyo's West ern suburbs for one instance. You will see hundreds and thousands of women lining up on the streets. American soldiers hang around until they pick up one each from the lines and go somewhere. Earn 200 MillionSuch prostitutes now total between 70, 000 and 80, 000 in Japan and earn 200, 000, 000. This is a big business next to the Korean war business which totals 400,000,000.When an air wing was based at Iwakuni in western Honshu, Japan's main island) last spring some 3000 Japanese prostitutes swarmed to the base. Many Japanese children worked as procurers and were paid 200 yen (55c) for each soldier they caught.Many Japanese children now are playing 'pan-pan (postwar Japanese slang for prostitute) among themselves. It is a juvenile experiment in the business of prostitutionMme. Ridgway, the letter continued, many innocent Japanese girls worship westerners. They try to speak English and to be friendly to Americans.Illegitmate BirthsThese girls are quickly seduced and eventually become prostitutes. It is, of course, a Japanese responsibility to prevent these girls from falling into temptation. But it is very painful to me to see these poor girl victims the end product of the war defeat.These girls reportedly have mothered 200,000 illegitimate children, and deserted many of them during the past six and one half years.WAR II KILLINGSSolon Learns Kin Victim Of MassacreNew York News ServiceFRANKFURT, Germany, April 20 Rep. Alvin E. OKonski, R., Wis., a member of the congressional committee investigating the Katyn forest massacre, discovered Sunday that his cousin was one of the victims of the mass murders.OKonski and four other congressmen arrived here from London Sunday, to begin hearings Monday.The Wisconsin representative said he was more determined than ever to get to the bottom of the Katyn mystery, now that he had discovered one of his own blood had suffered.The committee is trying to determine whether the Germans, or the Russians, killed 10, 000 Polish officers in theh Katyn forest, in the spring of 1940, when the two nations moved into Poland.OKonski learned about his cousin in new evidence presented to the committee in London.