TY - GEN AU - Meyerson, M R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1967-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.9588 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1967 TI - Examination of a cracked 4 cents Lincoln stamp printing plate: ER -