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| Tartan Name | Laggen Dress | | | | Category | Fashion
| | | | Designer | Jedburgh Woollen Mill | STA Ref | 5375 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Lagoon | | | | Category | Fashion
| Reference | 11865 | | Designer | Martin, Carol A L | | | | Date Recorded | 14/07/2017 | | |
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| Tartan Name | Lagrande | | | | Category | Fashion
| | | | Designer | Highland Queen | STA Ref | 5376 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Laing | | | | Category | Clan/Family | | | | Designer | Not Specified | STA Ref | 6096 | | Date Recorded | Not Specified | STWR Ref | 2801 |
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| Tartan Name | Laing of Archiestown | | | | Category | Clan/Family | | | | Designer | Not Specified | STA Ref | 2544 | | Date Recorded | Not Specified | STWR Ref | 2544 |
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| Tartan Name | Laird (Restricted) | | | | Category | Name
| | | | Designer | Laird, Nicola | STA Ref | 7856 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Lake Ainslie Heritage | | | | Category | District
| | | | Designer | MacMillan, Verna | STA Ref | 5377 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Laksaa (Manx) | | | | Category | Fashion
| | | | Designer | St. George's Woollen Mills | STA Ref | 1233 | | Date Recorded | Not Specified | STWR Ref | 1233 |
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| Tartan Name | Lalage (Personal) | | | | Category | Name
| | | | Designer | Keogh/Lochcarron | STA Ref | 6999 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Lambda Chi Alpha | | | | Category | Corporate
| Reference | 13226 | | Designer | Easter, Ed | | | | Date Recorded | 13/07/2021 | | |
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