| Trans. lines | 12 |
| Training systs. | 15 |
| Train cos. | 10 |
| Train companies: Abbr. | 22 |
| Traffic at Union Sta. | 21 |
| Traffic at Penn Sta. | 20 |
| Track lines: Abbr. | 18 |
| Tourist's options: Abbr. | 28 |
| Things with xings | 17 |
| They stop at Grand Central: Abbr. | 33 |
| They have strong ties: Abbr. | 28 |
| They have end-to-end cars: Abbr. | 32 |
| They cover their tracks: Abbr. | 30 |
| They cost $200 each in Monopoly: Abbr. | 38 |
| There are four in Monopoly: abbr. | 33 |
| Their lines have ties: Abbr. | 28 |
| Subjects of interstate regulation: Abbr. | 40 |
| Southern Pacific and others: Abbr. | 34 |
| Some Xing crossers | 18 |
| Some transp. stocks | 19 |
| Some lines that run parallel to planes: Abbr. | 45 |
| Some frt. carriers | 18 |
| Short Line and others: Abbr. | 28 |
| Santa Fe et al.: Abbr. | 22 |
| Santa Fe and others: Abbr. | 26 |
| Santa Fe and B&O: abbr. | 27 |
| Rural Routes, for short | 23 |
| Rock Island and Reading: Abbr. | 30 |
| Regulation targets for Theodore Roosevelt: Abbr. | 48 |
| Reading and the like: Abbr. | 27 |
| Reading and the like (abbr.) | 28 |
| Reading and B&O, e.g. | 25 |
| Railroads: abbr. | 16 |
| Purview of the I.C.C. | 21 |
| Pennsy et al. | 13 |
| Ones on the right track?: Abbr. | 31 |
| NKP, SAL et al. | 15 |
| N.Y. Central et al. | 19 |
| Monopoly tetrad, briefly | 24 |
| Monopoly props. in the middle of each side | 42 |
| Monopoly properties: Abbr. | 26 |
| Monopoly landings: Abbr. | 24 |
| Monopoly grp. | 13 |
| Monopoly foursome (abbr.) | 25 |
| Monopoly buys, in brief | 23 |
| Monopoly board quartet: Abbr. | 29 |
| Monopoly 4some | 14 |
| Modes of transit: Abbr. | 23 |
| Middle properties on the four sides of a Monopoly board: Abbr. | 62 |
| Lines to the suburbs: Abbr. | 27 |
| Lines to Penn Sta. | 18 |
| Leland Stanford companies: Abbr. | 32 |
| L.I. and Penn Central | 21 |
| Freight cos. | 12 |
| Four properties on a Monopoly bd. | 33 |
| Four Monopoly sqs. | 18 |
| Four Monopoly assets: Abbr. | 27 |
| Erie and Wabash: Abbr. | 22 |
| Cos. with Xings | 15 |
| Cos. with locomotives | 21 |
| Cos. with ampersands, often | 27 |
| Concern of Stanford and Vanderbilt: Abbr. | 41 |
| Commuting options: Abbr. | 24 |
| Commuting choices: Abbr. | 24 |
| Commuting choices (abbr.) | 25 |
| Commuters' choices: Abbr. | 29 |
| Commuters' choices (abbr.) | 30 |
| Commuter lines: Abbr. | 21 |
| Commuter lines on tracks: Abbr. | 31 |
| Choo-choos: Abbr. | 17 |
| Chessie et al.: Abbr. | 21 |
| Central Pacific, Southern Pacific and Union Pacific (abbr.) | 59 |
| B&O and Union Pacific | 25 |
| B&O and Union Pac. | 22 |
| B&O and Short Line: Abbr. | 29 |
| B&O et al. | 15 |
| B&B, etc. | 13 |
| B.&O., C.&O. et al. | 27 |
| B.&O. and Reading, e.g.: Abbr. | 34 |
| B.&O. and PATH | 18 |
| B.&O. and C.&O. | 23 |
| B.&O. and B.&M.L. | 25 |
| B. & O., and others | 23 |
| B. & O. et al. | 18 |
| B. & O. and others | 22 |
| B. & O. and L. & N. | 27 |
| B. & O. and C. & O. | 27 |
| B & O and Reading | 21 |
| B & O et al. | 17 |
| Amtrak and B&O, e.g. | 24 |
| Allegheny Valley and Arizona Central: Abbr. | 43 |
| $200 purchases: Abbr. | 21 |
| $200 props., in a game | 22 |
| $200 Monopoly purchases: Abbr. | 30 |
| $200 Monopoly properties: Abbr. | 31 |
| $200 game props. | 16 |
| 'Monopoly' quartet (Abbr.) | 34 |
| Gated intersections, briefly, and this puzzle's theme | 57 |
| Cape Town's country: Abbr. | 30 |
| Where Mandela was pres. | 23 |