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PH 9-1411 _ Director, FBI . a V/21/f55 — Photostat Photostatic co 7. Photosta e addressed to ires that the original letter addresse -be’ returned to his office upon completion of the conducted by the FBI . Laboratory. In addition to comparing the handprinting of vo the enclosed letters with the handprinting appearing in 2 captioned case, the Laboratory is requested to advise if the source of the original envelope can be identified, . Further that an attempt be made to locate latent fingerprints under the portion of the flap which remains on the envelope.