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| Tartan Name | Lareymondie (2017) | | | | Category | Name
| Reference | 11800 | | Designer | Lareymondie, François de Lacoste | | | | Date Recorded | 22/05/2017 | | |
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| Tartan Name | Largs Dress (1972) | | | | Category | Fashion
| | | | Designer | Highland Queen | STA Ref | 5392 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Largs Dress (1983) | | | | Category | District
| | | | Designer | Not Specified | STA Ref | none | | Date Recorded | Not Specified | STWR Ref | 1838 |
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| Tartan Name | Leach (1995) | | | | Category | Clan/Family | | | | Designer | Leach Jnr, Harold S | STA Ref | 2356 | | Date Recorded | Not Specified | STWR Ref | 2356 |
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| Tartan Name | Leach (1999) | | | | Category | Name
| | | | Designer | 'Smith Jnr, Dr Philip D | STA Ref | 5203 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Lemoine (2017) | | | | Category | Name
| Reference | 11938 | | Designer | Lemoine, Thomas | | | | Date Recorded | 12/10/2017 | | |
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| Tartan Name | Lenaghan (2017) | | | | Category | Name
| Reference | 11832 | | Designer | Hobbs, Francesmary | | | | Date Recorded | 23/06/2017 | | |
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| Tartan Name | Letter Dress (2014) | | | | Category | Name
| Reference | 11178 | | Designer | Letter, M F | | | | Date Recorded | 27/11/2014 | | |
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| Tartan Name | Littlejohn (2017) | | | | Category | Name
| Reference | 11895 | | Designer | Littlejohn, Fraser | | | | Date Recorded | 18/08/2017 | | |
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| Tartan Name | Livingston Football Club (2001) | | | | Category | Corporate
| | | | Designer | House of Edgar - Macnaughton Holdings Ltd. | STA Ref | 3986 | | Date Recorded | Not Specified | STWR Ref | 2856 |
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| Tartan Name | Loch Lomond (1999) | | | | Category | Fashion
| | | | Designer | Groves, Gary & Rowena | STA Ref | 2616 | | Date Recorded | Not Specified | STWR Ref | 2616 |
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| Tartan Name | Lochcarron (1985) | | | | Category | Fashion
| | | | Designer | Lochcarron of Scotland | STA Ref | 5462 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Logan - 1819 | | | | Category | Clan/Family | | | | Designer | Wilsons of Bannockburn | STA Ref | 398 | | Date Recorded | Not Specified | STWR Ref | 398 |
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| Tartan Name | Logan - 1819 (Dark) | | | | Category | Fashion
| | | | Designer | Wilsons of Bannockburn | STA Ref | 1150 | | Date Recorded | Not Specified | STWR Ref | 1150 |
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| Tartan Name | Logan - 1819 (Light) | | | | Category | Fashion
| | | | Designer | Wilsons of Bannockburn | STA Ref | 397 | | Date Recorded | Not Specified | STWR Ref | 397 |
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| Tartan Name | Logan - 1819 (with Yellow) | | | | Category | Fashion
| | | | Designer | Wilsons of Bannockburn | STA Ref | 590 | | Date Recorded | Not Specified | STWR Ref | 590 |
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| Tartan Name | Logan - 1831 | | | | Category | Clan/Family | | | | Designer | Logan, James | STA Ref | 490 | | Date Recorded | Not Specified | STWR Ref | 490 |
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| Tartan Name | Loganair 2017 | | | | Category | Corporate
| Reference | 11744 | | Designer | Harte, Laura | | | | Date Recorded | 15/03/2017 | | |
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