Hope this helps...... I found this on the Marlin Forum. In the interest of full disclosure I am far from an expert, but I am a bit of an Marlin addict.
Oh by the way Marlin 22 LR's are very addictive.
Glenfield (There's a story behind the Glenfield/Marlin conglomeration...but that's a tale for another post...)
Glenfield Model 10 = Marlin model 101
Glenfield Model 20 = Marlin model 80
Glenfield Model 25 = Marlin model 80/780 W/swivels
Glenfield Model 30 = Marlin 336C (.30-30 w/4-shot magazine)
Glenfield Model 30A = Marlin 336C (.30-30 w/6-shot mag)
Glenfield Model 30GT = Marlin 336
Glenfield Model 40 = Marlin 49DL
Glenfield Model 35 = Marlin model 336 (.35 cal)
Glenfield Model 36G = Marlin 336C (.30-30 w/5-round mag)
Glenfield Model 50 = Marlin model 55
Glenfield Model 60 = Marlin model 60/99C
Glenfield Model 65 = Marlin model 99M1
Glenfield Model 70 = Marlin model 70HC
Glenfield Model 70 = Marlin model 989
Glenfield Model 75 = Marlin 99M1
Glenfield Model 80G = Marlin model 80C
Glenfield Model 81G = Marlin model 81C
Glenfield Model 99-G = Marlin model 99C
Glenfield Model 101-G = Marlin model 101
Glenfield Model 989-G = Marlin model 989/Marlin 70
Glenfield/Marlin model 990 = Marlin 60 (17-round mag)
Coast to Coast (United Merchant)
Model 5 = Marlin 60
Model 3000 = Marlin 30AS
Model 600 = Marlin 60
Model 700 = Marlin 70
Model 40 = Marlin 99C/Glenfield 60
Model 42 = Marlin 70
Coast to Coast 70 = Marlin 70
Coast to Coast 440 = Marlin 70
Coast to Coast 550 = Marlin 60
Coast to Coast 650 = Marlin 55 Goose Gun
Coast to Coast 3030S = Marlin 30AS
Coast to Coast 6088CC = Marlin 60
Cotter & Company had a few also...
Model 10-40 = Marlin 101/Glenfield 10
Model 33 = Marlin 336
Model 601 = Glenfield 60
Model 60-50 = Glenfield 60/Marlin 99C
Model 701 = Marlin 70
Model 75-45 = Marlin 99M1 (top cover)
Model 75-46 = Glenfield 75C (no cover)
West Point (Cotter & Co as well)
Westpoint GA22 = Marlin 60 (old Model 75C)
Westpoint 45 = Marlin 60 (ditto)
Westpoint 601 = Glenfield/Marlin 60 Squirrel stock
Firestone
Firestone 10P30 = Marlin 81
Firestone 10P37 = Marlin 80
Firestone 10P64 = Marlin 336
Firestone 10P68 = Marlin 88
Firestone 10P90 = Marlin 39A
Firestone 10P253 = Marlin 56
Marky Bros
Thunderbolt Model JL = Marlin 101 (1000 made)
Montgomery Wards/Western Field/Hawthorne
Hawthorn Huntsman 25C = Marlin 55 Goose Gun
Western Field 33 = Marlin 336
Western Field 40 = Marlin 101
Western Field 45 = Marlin 989M2
Western Field 50 = Glenfield 60
Western Field 740 = Marlin336
Western Field EMN 171 = Marlin 50
Western Field EMN 175 = Marlin 50
Western Field EMN 176 = Marlin 55
Western Field M040 O/U = Marlin 90
Western Field XNH 175 = Marlin 55
Widgeon SA 650 = Marlin 55 12 ga.
JC Penny/Foremost
Foremost 2025 = Marlin 80C
Foremost 2035 = Marlin 80/Glenfield 20
Foremost 2066 = Marlin 49DL
Foremost 2935 = Marlin 336
Foremost 3040 = Marlin 336/Glenfield 30A
Foremost 6630 = Glenfield 50/Marlin 55
Foremost 6660 = Glenfield 60/Marlin 99C
Katz Drug Stores
F-71 = Marlin 80C
F-1143 = Marlin 55
F-1180 = Marlin 55
F-1282 = Marlin 989M2/Glenfield 70 (989M2 with cover is RARE)
F-1287 = Marlin 55/ Glenfield 50
Mages & Co.
M25 Coronet = Marlin 55
M25C = Marlin 55
Marky Bros
Thunder Bolt JL = Marlin 101
Otasco (Big 5) (Oklahoma Tire & Supply)
Otasco 30 = Marlin 336/Glenfield 30A
Otasco 65 = Marlin 99c/Glenfield 60
Big 5 model 5 = Marlin 99C/Glenfield 60
Big 5 model 3000 = Marlin 30AS
Medallion Versions - all 3000 series are .3030 model 30A/30AS, all 6000 series are model 60's.
Otasco 3030 = Glenfield 30A
Otasco 3079 = Glenfield 30A
Otasco 3080 = Glenfield 30A
Otasco 3081 = Glenfield 30A
Otasco 3082 = Glenfield 30AS
Otasco 3083 = Glenfield 30AS
Otasco 3084 = Glenfield 30AS
Otasco 3085 = Glenfield 30AS
Otasco 3086 = Glenfield 30AS
Otasco 3087 = Glenfield 30AS
Otasco 6060 = Marlin 60
Otasco 6079 = Marlin 60
Otasco 6080 = Marlin 60
Otasco 6081 = Marlin 60
Otasco 6082 = Marlin 60
Otasco 6083 = Marlin 60
Otasco 6084 = Marlin 60
Otasco 6085 = Marlin 60
Otasco 6086 = Marlin 60
Otasco 6087 = Marlin 60
Sears/J.C. Higgins/Ranger
JC Higgins 36 Bolt = Marlin 80
JC Higgins 42DL = Marlin 80
Ranger 34 = Marlin 65/65E
Ranger 34A = Marlin 80/80C/780 also Marlin 50 & 50E
Ranger 36 = Marlin 80 w/ Adjustable target trigger
Sears 101.451 = Marlin 336
Sears 101.54881 = Marlin 980DL
Sears 103.13 = Marlin 81
Sears 103.16 = Marlin 80
Sears 103.18 = Marlin 100
Sears 103.181 = Marlin 101
Sears 103.1977 = 101
Sears 103.19770 = 101
Sears 103.19771 = 101
Sears 103.19780 = 101
Sears 103.19790 = Marlin 80
Sears 103.19791 = 80
Sears 103.19800 = 80
Sears 103.19801 80
Sears 103.1981 = Marlin 81
Sears 103.19810 = 81
Sears 103.19811 = 81
Sears 103.1982 = 81DL
Sears 103.19820 = 81
Sears 103.19821 = 81
Sears 103.19840 = Marlin 56 Levermatic
Sears 103.19880/881/890 = Marlin 57 .22LR/.22Mag
Sears 103.2 = Marlin 80
Sears 103.228 = Marlin 80
Sears 103.229 = Marlin 81
Sears 103.273 = Marlin 782
Sears 103.273 = Marlin 980
Sears 103.274 = Marlin 122
Sears 103.275 = Marlin 122
Sears 103.2751 = Marlin 122
Sears 103.2840 = Marlin 80
Sears 103.2850 = Marlin 81
Sears 103.2870 = Marlin 56
Sears 103.350 = Marlin M90
Sears 103.360 = Marlin 90
Sears 103.4 = Marlin A1
Sears 103.450 = Marlin 336
Sears 103.451 = Marlin 336
Sears 103.720 = Marlin 59
Sears 103.740 = Marlin 59
Sears 103.8 = Marlin 100
Sears 10.19790 = Marlin 80
Sears 36 = Marlin 80
Sears 41 = Marlin 101
Sears 41DLA = Marlin 122
Sears 42 = Marlin 80
Sears 42DL = Marlin 80
Sears 42DLM = Marlin 980
Sears 43 = Marlin 81
Sears 43DL = Marlin 81
Sears 44DL = Marlin 57
Sears 44DLM = Marlin 57M
Sears 45 = Marlin336C
Sears 46= Marlin 56
Sears 46C= Marlin 56
Sears 46DL = Marlin 56
Western Auto/Revelation
Western Auto 103.13 = Marlin 81
Western Auto 103.16 = Marlin 80
Western Auto 103.18 = Marlin 80
Western Auto 103.181 = Marlin 101
Western Auto 103.19780 = Marlin 101
Western Auto 103.19790 = Marlin 80
Western Auto 103.19800 = Marlin 80
Western Auto 103.1981 = Marlin 81
Western Auto 103.1982 = Marlin 81DL
Western Auto 103.19820 = Marlin 81
Western Auto 103.19840 = Marlin 56
Western Auto 103.19880 = Marlin 57
Western Auto 103.19890 = Marlin57M
Western Auto 103.1997 = Marlin 101
Western Auto 103.2 = Marlin 80
Western Auto 103.228 = Marlin 80
Western Auto 103.229 = Marlin 81
Western Auto 103.273 = Marlin 980
Western Auto 103.274 = Marlin 122
Western Auto 103.2751 = Marlin122
Western Auto 103.2840 = Marlin 80
Western Auto 103.2850 = Marlin 81
Western Auto 103.2870 = Marlin 56
Western Auto 103.360 = Marlin 90
Western Auto 103.450 = Marlin 336
Western Auto 103.451 = Marlin 336
Western Auto 103.720 = Marlin 59
Western Auto 103.740 = Marlin 59
Western Auto 105-2060 = Marlin 780
Western Auto 105-2060 = Marlin80
Western Auto 110-2140 = Marlin 81
Western Auto 110-2140 = Marlin 781
Western Auto 115-2277 = Marlin 57
Western Auto 116-2276 = Marlin 57M
Western Auto 120-2220 = Marlin 99
Western Auto 150M = Marlin 49
Western Auto 150-2225 = Marlin 49
Western Auto 200-2280 = Marlin 39A
Western Auto 200-2282 = Marlin39A
Western Auto 200-2550 = Marlin336
Western Auto 200-2554 = Marlin 336 (.44mag)
Western Auto 2280 = Marlin 39A
Western Auto 2282 = Marlin 39A Mountie (Rare)
Western Auto 335-3725 = Marlin 59
