| National_Camp_Association_Inc_ Free guidance and referrals to summer programs worldwide. |
| Off_to_Camp A book for prospective overnight campers. Choose and prepare for camp, discover what camp is all about. |
| Student_Camp_and_Trip_Advisors Free service, with referrals to hundreds of camps worldwide. Includes checklists, newsletter, and activity examples. |
| The_Summer_Lady Offers free personalized guidance on choosing resident camps, tours, and community service programs. |
| Summer_Solutions Find the right summer overnight camp for children, ages 6 to 18, located in the USA and abroad. Information on our free camp fairs throughout the east coast. |
| SummerScope Contact information for free referral service for parents looking for a day, resident, or adventure camp for children or teens. Includes articles on choosing a camp. |
| Tips_on_Trips_and_Camps Information on summer camp programs for kids and teens. We provide free expert advice, brochures and videos to parents choosing overnight programs. |
| Classic_Tape_Recorders Focused on raising appreciation of analogue tape recoding and classic reel-to-reel tape recorders. Offers links, stories, background and history. |
| Cylinder_Preservation_and_Digitization_Project A digital collection of recordings held by the University of California at Santa Barbara. Includes searchable database, history of cylinder recordings, and donation information. |
| Digital_Needle_-_A_Virtual_Gramophone Audio extraction from images of gramophone records. |
| History_of_Recorded_Sound_(Antique_Phonograph_Books_Edison) Extensive article on the inventors and their US Patents, 1877-1912. |
| The_Phonograph_WebRing Early phonographs, gramophones, cylinders, 78s and recorded sound in general. |
| Recording_Consoles_of_the_20th_Century Contains pictures of most major recording consoles made in the 20th century. |
| Restoration_of_the_Leak_Stereo_20_Valve_Amplifier Provides information on circuit diagrams, parts listing, photographs and restoration advice. |
| World_of_Gramophones Downloads of historic recordings from cylinders and 78s as well as online sales of gramophones and recordings. |
| Yahoo!_Groups__AnalogueSynthesisers Discussion forum for information, classifieds, photos, and general know-how regarding analog and modular synthesizers. |
| 19th_Century_Music_restored_with_lasers New York Times Article: New technology designed to read cylinder records. (January 20, 2000) |
| Bridge_of_the_Month_Quiz An image is posted inviting entrants to identify the feature. A free copy of a book on the subject is awarded to one correct entrant per month. |
| Bridgepix_com Contains photographs and scans of other media of subjects worldwide. |
| The_Bridges_Project Online database of significant bridges compiled by the Department of Civil Engineering at Rice University. Includes photographs. |
| International_Peace_Highway_Project International Highway Construction Corporation, supporters of a highway system connecting most of the world which would include a Bering Strait bridge and Japan-South Korea tunnel. |
| MrTunnel_com Discusses many projects. |
| A_Span_For_All_Seasons A collection of photographs of facilities and a large worldwide inventory of suspension bridges. |
| The_Tunnel_Page The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes. |
| California_Freeway_Interchanges Photographs from around the state. |
| Continuous_Flow_Intersections Engineering firm page illustrating the connections in this feature. Includes illustrations and a video demonstration. |
| Highway_Feature_of_the_Week Large archive of maps and descriptions of unusual or complicated facilities, primarily in the United States. |
| Highway_Heaven_Blog Includes aerial photographs and commentary about certain features. |
| Highway-Intersections_net Compendium of map images from various European countries. |
| Images_of_Britain_-_Spaghetti_Junction The M6 at the A38(M) in Birmingham. |
| Interchange_of_the_Week Detailed entries for locations in New York State, using official state aerial photography. |
| Interchanges Page describing types found in the United Kingdom. Includes a link to the Bad Junctions page. |
| Interstate_Interchange_Browser Uses Google Maps to locate every interchange on the U.S. Interstate system. |
| Michigan_Left_Turn Describes how this unusual intersection feature works, including history. |
| Museum_of_Dumb_Highway_Design Aerial photos of and commentary on various interchanges which the author finds unusual or substandard. |
| The_Parallel_Flow_Intersection A specialized intersection. Page includes diagrams and research. |
| Unusual_Interchanges Diagrams and commentary of various ones in the East-Central U.S. |
| US_Highway_Interchange_Browser Covers Michigan and North Carolina. |
| An_VRML_rendering_of_the_15-91_interchange,_Corona_California_ A 4-level stack with one loop. Requires a VRML plugin to view. |
| WhereRoadsMeet Contains aerial photographs and descriptions of unusual or complicated facilities in the United States. |