YAML       YANKEE LINES INC
YAN        YANCY RAILROAD
YARR       YOUNGSTOWN AND AUSTINTOWN RAILROAD, INC.
YAZ	   CENTURY 21 PLANT
YB         YOUNGSTOWN BELT RAILROAD CO.
YBHA	   YUBA HEAT
YBTL       YOUNGBLOOD TRUCK LINES INC
YCEU       INTER-CONTINENTAL EQUIPMENT, INC.
YCMZ	   YELLOW CREEK MINE
YDC	   YANKEE DOT CORP.
YDCX	   *YANKEETOWN DOCK CORP.
YDCX	   +PEABODY COALSALES CO.
YEMX	   YESERA MONTERREY, SA
YFIZ       YELLOW FORWARDING CO.
YFSY       YELLOW FREIGHT SYSTEM, INC.
YFSZ       YELLOW FREIGHT SERVICES, INC.
YILA	   YAKIMA INTERURBAN LINES ASSOCIATION
YKR        YORK RAILWAY [YORKRAIL, INC.] 
YMCZ       YANGMING MARINE TRANSPORT CORPORATION
YMLU       YANGMING MARINE TRANSPORT CORPORATION
YMLZ       YANGMING MARINE TRANSPORT CORPORATION
YMQZ	   YELLOW MEDICAN QUARRY
YN	   YOUNGSTOWN & NORTHERN RAILROAD CO.
YOCX	   YALE OIL ASSOCIATION (UUNION TANK CAR CO.)
YOKX	   YALE OIL ASSOCIATION
YOTC       YORK TRANSPORTATION CO.
YOTX	   YALE OIL TANK LINE CO.
YRC	   YORK RAILWAY CO.
YRMX	   YUKON RAILROAD MUSEUM, YUKON, O
YRPL	   YELM ROY PRAIRIE LINE
YRTX	   YARYAN ROSIN & TURPENTINE CO.
YS         (PLW) PL&W RAILROAD CO., INC. [YOUNGSTOWN & SOUTHERN RWY.; 
	   YOUNGSTOWN & SUBURBAN RWY. CO.]
YSAA       YAMASHITA-SHINNIHON LINE
YSAB       YAMASHITA-SHINNIHON LINE
YSAD       YAMASHITA-SHINNIHON LINE
YSAH       YAMASHITA-SHINNIHON LINE
YSAL       YAMASHITA-SHINNIHON LINE
YSAM       YAMASHITA-SHINNIHON LINE
YSAZ       NIPPON LINER SYSTEM
YSB        YORKE & SON BARGE
YSDA       YAMASHITA-SHINNIHON LINE
YSDF       YAMASHITA-SHINNIHON LINE
YSDU       YAMASHITA-SHINNIHON LINE
YSDX       YOUNGSTOWN STEEL DOOR CO.
YSFD       YAMASHITA-SHINNIHON LINE
YSFF       YAMASHITA-SHINNIHON LINE
YSFM       YAMASHITA-SHINNIHON LINE
YSIC       YAMASHITA-SHINNIHON LINE
YSIP       YAMASHITA-SHINNIHON LINE
YSJU       YAMASHITA-SHINNIHON LINE
YSLD       YAMASHITA-SHINNIHON LINE
YSLM       YAMASHITA-SHINNIHON LINE
YSLR       YOLO SHORTLINE RAILROAD COMPANY
YSLT       YAMASHITA-SHINNIHON LINE
YSLU       YAMASHITA-SHINNIHON LINE
YSLZ       (YSLU) YAMASHITA-SHINNIHON LINE
YSMX       RETIRED09-29-92 ATP (1676) [CANADIAN GYPSUM CO. LTD.; PANAMA GYPSUM CO.]
YSNA       YAMASHITA-SHINNIHON LINE
YSRR	   YOUNGSTOWN & SOUTHEASTERN RAILROAD CO., INC.
YST	   YOUNGSTOWN SHEET & TUBE CO.
YSTD       YAMASHITA-SHINNIHON LINE
YSTM       YAMASHITA-SHINNIHON LINE
YSTS       YAMASHITA-SHINNIHON LINE
YSTT       YAMASHITA-SHINNIHON LINE
YSTU       YAMASHITA-SHINNIHON LINE
YSTX       RETIRED 02-19-91 FET (ACI 1677) [YOUNGSTOWN SHEET & TUBE CO.]
YSUF       YAMASHITA-SHINNIHON LINE
YSVR	   YELLOWSTONE VALLEY RAILROAD, INC.
YTDZ	   YANKEETOWN DOCK CORP.
YTFL       YELLOW TRANSIT FRT LINES
YTTX	   TTX COMPANY
YUR	   YUMA VALLEY RAILROAD
YV	   YOSEMITE VALLEY RAILWAY
YVRR       YADKIN VALLEY RAILROAD CO.
YVRX	   YAKIMA VALLEY RAIL & STEAM MUSEUM
YVT	   YAKIMA VALLEY TRANSPORTATION CO.
YW         YREKA WESTERN RAILROAD CO.