Reference: Complete Audubon Imperial Quadruped List

For your reference, what follows is a listing of all 150 of Audubon's Imperial Quadrupeds. These measure 22 x 28 inches untrimmed.
Plate 

Name of Mammal
1 Common American Wild Cat
2 Woodchuck
3 Townsend's Rocky Mountain Hare
4 Florida Rat
5 Richardson's Columbian Squirrel
6 American Red-Fox
7 Carolina Grey Squirrel
8 Chipping Squirrel
9 Parry's Marmot Squirrel
10 Common American Shrew Mole
11 Northern Hare, Summer
12 Northern Hare
13 Musk-Rat, Musquash
14 Fremont's Squirrel
15 Rocky Mountain Flying Squirrel
16 Canada Lynx
17 Cat Squirrel
18 Marsh Hare
19 Douglass Squirrel
20 Townsend's Ground Squirrel
21 Grey Fox
22 Grey Rabbit
23 Black Rat
24 Four-Striped Ground Squirrel
25 Downy Squirrel
26 The Wolverine
27 Long Haired Squirrel
28 Common Flying Squirrel
29 Rocky Mountain Neotoma
30 Cotton Rat
31 Collared Peccary
32 Polar Hare
33 Mink
34 Black Squirrel
35 Migratory Squirrel
36 Canada Porcupine
37 Swamp  Hare
38 Red-Bellied Squirrel
39 Leopard Spermophile
40 White Footed Mouse
41 Pennants Marten or Fisher
42 Common American Skunk
43 Hare Squirrel
44 Canada Pouched Rat
45 Wilson's Meadow Mouse
46 American Beaver
47 American Badger
48 Douglass Squirrel
49 Douglasse's Spermophile
50 Richardson's Spermophile
51 Canada Otter
52 Swift Fox
53 Texan Skunk
54 Brown, or Norway Rat
55 Red-Tailed Squirrel
56 American Bison or Buffalo
57 American Bison or Buffalo
58 Orange-Bellied Squirrel
59 White Weasel Stoat
60 Bridled Weasel
61 Raccoon
62 American Elk-Wapiti Deer
63 Black-Tailed Hare
64 Small Weasel
65 Little Harvest Mouse
66 Virginian Opossum
67 Black American Wolf
68 Fox Squirrel
69 Common Star-Nose Mole
70 Says Least Shrew
71 Prairie Wolf
72 White American Wolf
73 Rocky Mountain Sheep
74 Shrew Mole
75 Carolina Shrew
76 Moose Dear
77 Prong-Horned Antelope
78 Black-Tailed Deer
79 Annulated Marmot Squirrel
80 Lecontes Pine Mouse
81 Common or Virginian Deer
82 Red Texan Wolf
83 Little Chief Hare
84 Franklin's Marmot Squirrel
85 Jumping Mouse
86 Ocelot, or Leopard-Cat
87 American Red-Fox
88 Worm Wood Hare
89 Say's Squirrel
90 Common Mouse
91 Polar Bear
92 Common American Wild Cat
93 Black Footed Ferret
94 Nuttall's Hare
95 Orange Colored Mouse
96 The Cougar
97 The Cougar
98 Ring-Tailed Bassaris
99 Prairie Dog-Prairie Marmot Squirrel
100 Missouri Mouse
101 The Jaguar
102 Large tailed Skunk
103 Hoary Marmot-The Whistler
104 Collie's Squirrel
105 Columbia Pouched Rat
106 Columbian Black-Tailed Deer
107 Lewis' Marmot
108 Bachman's Hare
109 Californian Marmot Squirrel
110 Mole Shaped Pouched Rat
111 Musk Ox
112 Californian Hare
113 Esquimaux Dog
114 Say's Marmot Squirrel
115 Yellowed Cheeked Meadow Mouse
116 American Black or Silver Fox
117 Dusky Squirrel
118 Long-Tailed Deer
119 Hudson's Bay Lemming
120 Tawny Lemming
121 Arctic Fox
122 Canada Otter
123 The Sewellel
124 Mexican Marmot/Squirrel
125 American Marsh Shrew
126 Caribou or American Reindeer
127 American Black Bear
128 Rocky Mountain Goat
129 Northern Meadow Mouse
130 Pouched Jerboa Mouse
131 Grizzly Bear
132 Hare Indian Dog
133 Texan Hare
134 Yellow Bellied Marmot
135 Richardson's Meadow Mouse
136 Common or Virginian Deer
137 Sea Otter
138 Pine Marten
139 Large-Tailed Spermophile
140 Bridled Weasel
141 American Black Bear
142 The Camas Rat
143 Rocky Mountain Flying Squirrel
144 Bank Rat
145 Townsend's Shrew Mole
146 Nine-Banded Armadillo
147 American Souslik
148 Little American Brown Weasel
149 Fremont's Squirrel
150 Long-Nosed Shrew