- Labour in Vain [public house] 1, 2n.2
- Lackington, James 1, 2n.45
- Lamb, Charles 1, 2, 3, 4, 5, 6, 7, 8n. 197, 9, 10n.203, 11n.65
- Lamb, Mary 1, 2n.203
- Landor, Walter Savage 1n.45
- Langley Bush 1, 2, 3, 4n.8
- Large, Mr and Miss [Helpston neighbours] 1
- Latimer, Hugh 1n.50
- Lawrence, Sir Thomas 1, 2, 3, 4n.159, 5n.228
- Lea Close 1
- Lea Close oak 1
- Leadenhall Street, London 1, 2n.14
- Lee, James 1, 2n.48
- Leeds Correspondent, The 1, 2n.92
- Leonidas 1, 2n.1
- Leopards Hill (Leppits Hill) 1, 2
- Leopold, Prince 1
- Lestrange’s Fables of Esop 1
- Leybourne, William 1, 2n.48
- Life of Barnfield, The 1, 2n.48
- Life of God in the Soul of Man, The 1, 2n.187
- Life of Joseph 1
- Lilly, William 1, 2n.19
- Lincoln 1, 2
- Lincolnshire 1, 2
- Lingfield and Crowhurst choir 1, 2n.200
- Linnaeus, Carolus 1, 2, 3n.125
- Literary Souvenir, The 1, 2n.117
- Little Red Riding Hood 1, 2, 3, 4n.69
- Lloyd, Charles 1, 2n.65
- Lofft, Capel 1, 2n.56
- Lolham Bridges 1, 2, 3, 4, 5n.14, 6n.87
- Lolham Lane 1, 2
- London 1, 2, 3, 4, 5, 6, 7, 8, 9
- London Magazine 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15n.49, 16n.43, 17, 18n.57, 19n.98, 20n.243
- Long Close 1
- Love, Samuel [Glinton wheelwright] 1, 2n.120
- Lucas, Revd Richard [of Casterton] 1, 2n.108
- Lyon, Captain George Francis 1, 2n.155