John Kenneth Aldrich was a geologist, lecturer, and author whose "Ghosts of . . ." books and accompanying topo maps are a boon to hobbyists, explorers, and those interested in Colorado mining history. These books, each with beautiful color photographs, ghost town history, and geological information (but no "ghost" stories) cover 427 locations as listed below. Each book is 34 to 64 pages.
- Ghosts of Clear Creek County with map
- Ghosts of Gilpin County with map
- Ghosts of Park County with map
- Ghosts of Boulder County with map
- Ghosts of Summit County with map
- Ghosts of Lake County (and eastern Pitkin County) with map
- Ghosts of Teller County with map
- Ghosts of Chaffee County (and eastern Gunninson County) with map
- Ghosts of the Sangre de Cristo Area (and Saguache, Custer, Alamosa, Fremont, and Costilla Counties) with map.
- Ghosts of the Eastern San Juans (and Mineral, Saguache, Gunnison, Rio Grande, and Conejos Counties) with map
- Ghosts of Pitkin County (and northern Gunnison County) with map
- Ghosts of Northern Colorado (Eagle, Grand, Jackson, Routt, and Larimer Counties) with map
- Ghosts of the Western San Juans Vol. 1 (Ouray, San Juan, and Hinsdale Counties) with map
- Ghosts of the Western San Juans Vol. 2 (San Miguel, La Plata, and Dolores Counties) with map
Name County Number Adelaide Lake 06 Adrian Summit 05 Alicante Lake 06 Alice Clear Creek 01 Alma Park 03 Almont Gunnison 11 Alpine Chaffee 08 Alpine Station Gunnison 08/15 Alpine Tunnel Gunnison 08/15 Alta San Miguel 14/15 Altman Teller 07/15 Altona Boulder 04 American City Gilpin 02 Ames San Miguel 14 Anaconda Teller 07 Animas City La Plata 14 Animas Forks San Juan 13/15 Antelope Gilpin 02 Antelope Springs Mineral 10 Apex Gilpin 02 Arbourville Chaffee 08 Arequa Teller 07 Argentine Summit 05/15 Arrastra San Juan 13 Arrow (Arrowhead) Grand 12 Ashcroft Pitkin 11/15 Aspen Pitkin 11 Astor City Eagle 12 Babcock Chaffee 08 Bachelor Mineral 10 Baker City San Juan 13 Baker Park San Juan 13 Baker's Tank Summit 05 Bakerville Clear Creek 01 Balarat Boulder 04 Baldwin Gunnison 11/15 Balfour Park 03 Baltimore Gilpin 02 Bandora San Juan 13 Barry Teller 07 Basalt Eagle/Pitkin 11 Beartown San Juan 13 Belden Eagle 12 Biedell Saguache 10 Birdseye Lake 06 Black Hawk Gilpin 02 Bonanza Saguache 09/15 Boreas Park/Summit 03/05 Boston Summit 05/15 Bowerman Gunnison 08 Bowman Gunnison 08 Braddocks Summit 05 Breckenridge Summit 05 Brownsville Clear Creek 01 Brumley Lake 06 Buckskin Joe Park 03 Buena Vista Chaffee 08 Busk Lake 06 Cache Creek Chaffee 08 Calumet Chaffee 08 Cameron Teller 07 Camp Albion Boulder 04 Camp Bird Ouray 13 Camp Frances Boulder 04 Camp Hale Eagle 12 Camp Harrigan Lake 06 Camp Providence Boulder 04 Camp Tolcott Boulder 04 Capitol City Hinsdale 13 Carbonate Garfield 11 Carbonateville Summit 05 Carbondale Garfield 11 Cardinal Boulder 04 Carey's Camp Pitkin 11 Caribou Boulder 04 Carnero Saguache 10 Carson Hinsdale 13/15 Central City Gilpin 02 Champion Mill Lake 06/15 Champion Mine Lake 06/15 Chance Gunnison 10 Chattanooga San Juan 13 Chihuahua Summit 05 Clark Routt 12 Cleora Chaffee 08 Cleveland Eagle 12 Clinton Lake 06 Climax Lake 06 Clinton City Summit 05 Cloud City Gunnison 11 Cochitopa Saguache 10 Colfax Custer 09 Columbine Routt 12 Commodore Camp Alamosa 09 Como Park 03 Conger Summit 05 Cooper's Camp Pitkin 11 Cooper Rock Boulder 04 Creede Mineral 10/15 Crested Butte Gunnison 11 Crestone Saguache 09 Cripple Creek Teller 07 Crisman Boulder 04 Crystal Gunnison 11/15 Custer City Custer 09 Dallas City Ouray 13 Dawson City Fremont 09 Del Norte Rio Grande 10 Delaware Flats Summit 05 Dickey Summit 05 Dillon Summit 05 Dora Custer 09 Downieville Clear Creek 01 Dubois Gunnison 10 Dumont Clear Creek 01 Dunton Dolores 14 Durango La Plata 14 Duchtown Grand 12 Dyersville Summit 05/15 East Portal Gilpin 02 Eclipse Teller 07 Eldora Boulder 04 Elkton Teller 07 Embargo Saguache/Rio Grande 10 Empire Clear Creek 01 Engineer City Hinsdale 13 Eureaka San Juan 13 Evansville Lake 06 Everett Lake 06 Evergreen Lakes Lake 06 Exchequerville Saguache 09 Fairplay Park 03 Fall Creek San Miguel 14 Fall River Clear Creek 01 Farnham Spur Summit 05 Filger City Summit 05 Finntown Lake 06 Fisherville San Juan 13 Floresta Gunnison 11 Folsome San Miguel 14 Forks Creek Clear Creek 01 Fourth of July Mine Boulder 04 Franklin Summit 05 Free Gold Chaffee 08 Freeland Clear Creek 01 Frisco Summit 05 Fryingpan River Towns Lake 06 Fulford Eagle 12 Galena Fremont 09 Gambell Gulch Gilpin 02 Garfield Chaffee 08 Garland City Costilla 09 Gaskill Grand 12 Geneva Clear Creek 01/15 Georgetown Clear Creek 01 Georgia Bar Chaffee 08 Gillett Teller 07 Gilman Eagle 12/15 Gilpin Gilpin 02 Gilson Gulch Clear Creek 01 Gladstone San Juan 13 Glenwood Springs Garfield 11 Gold Dirt Gilpin 02 Gold Hill Boulder 04 Gold Hill Station Boulder 04 Gold Lake Boulder 04 Gold Park Eagle 12 Goldfield Teller 07 Gothic Gunnison 11 Grand Island Boulder 04 Grand Lake Grand 12 Granite Chaffee 08 Graymont Clear Creek 01 Gresham Boulder 04 Gunnison Gunnison 11 Guston Ouray 13/15 Guston Ouray 13/15 Hahn's Peak Routt 12 Hall Valley Park 03 Hamilton Park 03 Hancock Chaffee 08 Handcart Gulch Park 03 Harvard City Chaffee 08 Haywood Summit 05 Henson Hinsdale 13 Hesperus La Plata 14 Hessie Boulder 04 Highland Pitkin 11 Highland Mary San Juan 13 Hitchen's Camp Grand 12 Holland Park 03 Holy Cross City Eagle 12/15 Horseshoe Park 03 Hortense Chaffee 08 Howardsville San Juan 13 Howland Lake 06 Ibex Lake 06 Idaho Springs Clear Creek 01 Ilse Custer 09 Independence Pitkin 06 Independence Teller 07 Iris Saguache 10 Iron City Chaffee 08 Ironton Ouray 13/15 Irwin Gunnison 11 Ivanhoe Pitkin 06 Jack's Cabin Gunnison 11 Jamestown Boulder 04 Janeway Pitkin 11 Jasper Rio Grande 10 Jefferson Park 03 Jimtown Mineral 10 JunctionCity Summit 05 Kerber City Saguache 09 Keystone Summit 05 Kingston Gilpin 02 Kokomo Summit 05 La Plata La Plata 14 Lake City Lake 06 Lake City Hinsdale 13 Lake Gulch Gilpin 02 Lakewood Boulder 04 Lamartine Clear Creek 01/15 Larium Summit 05 Lawrence Teller 07 Lawson Clear Creek 01 Leadville Lake 06 Leavick Park 03 Lenado Pitkin 11 Liberty Saguache 09 Lincoln Summit 05 Lizard Head San Miguel 14 Loma Rio Grande 10 London Junction Park 03 London Mines, The Park 03/15 Lost Canyon Placers Chaffee 08 Lost Trail Camp Hinsdale 13 Lulu City Grand 12 Magnolia Boulder 04 Malta Lake 06 Manhattan Larimer 12