- Libro electrónicoGuide to Photographing BirdsHarold Stiver
- Libro electrónicoBirding the Orkney IslandsHarold Stiver
- Libro electrónicoOntario's WaterfallsHarold Stiver
- Libro electrónicoBirding Guide to OrkneyHarold Stiver
- Libro electrónicoOntario's Old MillsHarold Stiver
- Libro electrónicoCovered Bridges of the SouthHarold Stiver
- Libro electrónicoNew England Covered BridgesHarold Stiver
- Libro electrónicoConnecticut Covered BridgesHarold Stiver
- Libro electrónicoVirginia Covered BridgesHarold Stiver
- Libro electrónicoSeries: Covered Bridges of North AmericaHarold Stiver
- Libro electrónicoDelaware's Covered BridgesHarold Stiver
- Libro electrónicoKentucky Covered BridgesHarold Stiver
- Libro electrónicoNew York Covered BridgesHarold Stiver
- Libro electrónicoMaryland's Covered BridgesHarold Stiver
- Libro electrónicoMassachusetts Covered BridgesHarold Stiver
- Libro electrónicoMaine Covered BridgesHarold Stiver
- Libro electrónicoNew Hampshire Covered BridgesHarold Stiver
- Libro electrónicoTennessee Covered BridgesHarold Stiver
- Libro electrónicoMichigan Covered BridgesHarold Stiver
- Libro electrónicoVermont Covered BridgesHarold Stiver
- Libro electrónicoIndiana's Covered BridgesHarold Stiver
- Libro electrónicoWest Virginia Covered BridgesHarold Stiver
- Libro electrónicoOhio's Covered BridgesHarold Stiver