There is a brilliant version of Morgans map of 1682 at the Layers of London site; you need to click to use the overlay, then use the sliders on the Overlay tools to get varying images. I also hide all pins.
The Morgan map depicts the city of London 16 years after the Great Fire. This map complements the slightly earlier Ogilby and Morgan map by adding a survey of Westminster and a section of Southwark and showing the changes made to the city from 1676 to 1682. The Morgan map also includes detailed depictions of churches, markets, and great houses located throughout the area and a long panorama of London and Westminster. An original map survives in the British Library.
There is duplication of the numbering system amongst the four sections of the map.
There appear to be four sections of the key, which relate to different sections of the map.
The first is Westminster, and includes about 419 separate key entries, and many of thses are Inns (or Innes). Beginning in Portugal street (later named Piccadilly) and ending at 419 Bishops Head court in Grays Inn lane.
Here is part 1 of Westminster from St Thomas (1) to Walker yard (209)
The Key :
1 St Thomas : Clargis
2 Lady Stanhope
3 White Horse Inne - Portugal street becomes Piccadilly - White Horse Inn, 166 Piccadilly, St James, Westminster
4 Elephant & Castle yard - Portugal street
5 Queens Arms yard
6 Marvells yard - Piccadilly
7 Naked boy alley - Piccadilly
8 Starr yard
9 Kemps yard
10 Davis yard
11 Lady Herberts
12 Harris yard
13 Painters court
14 Warwick court
15 Stable yard
16 Browns court - Shug lane
17 Hunts court - Shug lane
18 Georges yard - Shug lane
19 Fleece yard - Great Jermin street and Piccadilly
20 Shorters yard - Piccadilly
21 Combes Rents
22 Three Kings court
23 Parsons court
24 Salters court
25 Oaved alley
26 Tidmans yard - Haymarket, south side
27 Davis yard - Haymarket, south side
28 Naggs Head Inne - Haymarket, south side - Nags Head, 59 Haymarket, St James, Westminster
29 White Horse Inne - Haymarket, south side - White Horse, Haymarket, St James, Westminster
30 Phoenix Inne - Haymarket, south side - Phoenix, Haymarket, St James, Westminster
31 Unicorne Inne - Haymarket, south side - Unicorn, Haymarket, St James, Westminster
32 Kings Head Inne - Haymarket, north side - Kings Head, Haymarket, St James, Westminster
33 Sir William Coventrys - Coventry street & Haymarket
34 Bull Inne - Jermin street - Kings Head, Haymarket, St James, Westminster
35 Salters court - Windmill street
36 Wests yard
37 Windmill yard - Windmill street
38 Black horse yard
39 Conde court - Windmill street
40 Crown yard - Coventry street & Windmill street
41 Paved alley
42 Cimballs Rents - Poultney street
43 Jukes yard - Poultney street
44 Germins Rents
45 Cunball Courts
46 Giggs Rents
47 Tobacco rowl yard
48 Edwards Court - Oxenden street
49 Whitcomb Court - Oxenden street
50 George Inne - Hedge lane , Whitcombe street - George inn, Hedge lane, Whitcomb street, St Martins in Fields WC2
51 Princes Court
52 Dagbies yard
53 Kemps yard - Hedge lane
54 White hart Inne - Warwick street - White Hart, Warwick street, St James, Westminster
55 Red Lion Inne - Spring gardens, Charing Cross - Red Lion, Spring gardens, Charing Cross, St Martins in Fields WC2
56 Mermaid court - Charing Cross
57 Chequer Inne - Strand, north side, western end - Chequer Inn, Charing Cross, St James, Westminster
58 Swan Inne - Strand, north side, western end - Swan Inn, Strand, St James, Westminster
59 Starr Inne - Strand, north side, western end - Star Inn, Strand, St James, Westminster
60 Kings head Inne - Strand, north side, western end - Kings Head, Strand, St James, Westminster
61 Harts horn lane - Strand, south side
62 Brazens Court
63 Feathers alley
64 Spurr alley - Strand, south side
65 Brewers yard
66 Hungerford Court - Strand, south side
67 Hungerford market - Strand, south side
68 Greens Lane - Strand, south side
69 Globe alley - Strand, south side
70 Bell yard - Strand, south side
71 Round Court - Strand, north side
72 Potters alley - Strand, north side
73 Robinhood Court - Strand, north side
74 Church Lane - Strand, north side
75 Chequer yard - St Martins lane
The Mews yard
76 Dukes yard
Green Mews
St Martins Church yard
77 Castle yard
78 Ellis Court
Duke of Monmouth stables
79 Red Lion Inne - Castle street - Red Lion, Castle street, Leicester square, St Martins in Fields WC2
80 Castle Inne - Green street, - Castle Inn, Green street, Leicester square, St Martins in Fields WC2
81 Swan yard
82 Crown yard
83 Spite alley
84 Wells yard - Church street
85 Plumers alley
86 Plumers yard
87 Banisters alley
88 Angell Inne - Broad street, St Giles - see Angel, 61 - 62 St Giles High street WC2H 8LE
89 Knights yard - Church street
90 Redings Rents - Maidenhead lane
91 Collins Rents - Maidenhead lane
92 Naggs Head yard
93 Castle yard
94 Plough Court
95 Hole in ye Wall yard
96 Bull Inne - Vernon street , Hart street - Bull Inn, Vernon street, Hart street, Bloomsbury market WC1
97 Plough yard
98 Barnes yard
99 Fishers alley
100 Hides alley
101 White Hart Inne - Drury lane, St Giles - see White Hart, 191 Drury lane WC2B
102 Ragged staff Court
103 Paviors alley
104 Rose & Crown yard - St Giles
105 Maidenhead yard - St Giles
106 Maidenhead alley - St Giles
107 Sharps alley - Bowl yard
108 Salutation alley
109 Lamb alley
110 Swan yard
111 Crown Court
112 Cock alley
113 Tailors yard - King street
114 Martins alley
115 Burtons alley
116 Hookes alley
117 Blew boar alley - Monmouth street
119 Combes yard
119 Browns Rents - White Lion street
120 Browns Rents - White Lion street
121 Pied Bull yard - Castle street, north side
122 Mairmaid alley - King street
123 Legg alley
124 Paviors yard
125 Knuckles alley - Castle street, south side
126 Terret Court
127 Faulconers alley
128 Mace alley
129 Coxes yard - Castle street, south side
130 Crown Court - Long Acre, north side
131 Harrow alley - Castle street
132 Angell Court
133 Halfpenny yard - Castle street, south side
134 Cock & hoop yard
135 Dukes head yard
138 Angell Court - Long Acre
139 King head Inne - Long Acre - King head Inn, Long Acre, St Martins in Fields WC2
140 Blackamore alley - St Martins lane
141 Angell Court - St Martins lane
142 Garter alley - St Martins lane
143 Cross keys Inne - St Martins lane - Cross Keys Inn, St Martins lane, St Martins in Fields WC2
142 Coach and Horses yard
143 Fishers alley
144 Kings arms Inne - St Martins lane and Bedfordbury - Kings Arms Inn, 51 St Martins lane, St Martins in Fields WC2
145 The Hop garden - St Martins lane
146 Kenistons alley - St Martins lane
147 Cock & Bottle yard
148 Bell yard
149 Anchor yard
150 Key yard
151 Feathers alley - St Martins lane
152 Feltons yard
153 Rose alley - St Martins lane
154 Norrells yard - Bedfordbury
155 Deans yard - Bedfordbury
156 White hart yard
157 Dawsons alley - St Martins lane
158 Browns yard
159 Ecclestons yard
160 Knights yard
161 Back Round Court
162 Brighams yard - Shandois street
163 Stable yard
164 Crown Court
165 Golden Lion Court
166 Angel Court
Spring Gardens
167 Wallingford house
Scotland Yard
168 The Horse guard
White Hall
Banqueting House
The Privy Garden
169 Hamlins yard
[A note about KIng street, which runs north - south and is joined by newer Parliament street by 1743 running alongside to the east.]
170 Duffins alley - King street
Axe Yard
171 Sea alley - King street
172 Bell Court - King street
173 Rose & Crown Inne - King street - Rose and Crown, King Street, St Margaret, Westminster
174 Chequer alley - King street
175 Pentioners alley
176 Brewers yard
177 Rhenish wine yard - King street
178 Stephens Lane - King street
Derby House
179 Lady Court
180 White horse Inne - King street - White Horse inn, King Street, St Margaret, Westminster
Manchester House
181 Bracebys alley
182 Whiteings alley
183 Pitmans alley
184 Bowmans Court
185 Poulterers yard
186 Pewterers alley - King street
187 Clinkers Court
188 Faulcon alley - King street
189 Smiths alley
190 Antelope alley - King street
191 Blew boar Inne - King street - see Blue Boars Head, 34 King Street, St Margaret, Westminster
192 George yard - George Inn, King Street, St Margaret, Westminster
193 Bell alley - King street
194 Fountain Court - King street
195 Froggets alley
196 Spread Eagle alley
197 Star alley
198 Scotts alley
199 Round Court
200 Vine Court - The Sanctuary
201 Greens alley - The Sanctuary
202 Little Sanctuary - King street
The Sanctuary
203 Maiden Lane
204 Red Cross alley
205 Ogilbys yard
206 Garrisons alley
207 Waites alley
208 Golden lion Court - Long Ditch
209 Walker yard - Tuthill street