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| current | 17:19, 7 April 2021 |  | 1,548 × 1,197 (782 KB) | Mliu92 | Uploaded a work by Unknown / uncredited photographer(s) and/or illustrator(s) from {{cite report |url=https://rosap.ntl.bts.gov/view/dot/10993 |title=Urban Rail Supporting Technology Program, Fiscal Year 1973, Year End Summary {{!}} Report No. UMTA-MA-06-0025-74-9 |author=Madigan, Ronald J. |date=October 1974 |publisher=Office of Research and Development, Urban Mass Transportation Administration, United States Department of Transportation |access-date=7 April 2021}} with UploadWizard |
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