31.   Bentley used to live in the mountains north of Santa Fe, where a fireplace was the only source of heat.

32.   Besides providing news about power outages and the weather, it may end up being your only source of entertainment.

33.   Both say the income in foreign currency is their only source of security at a time when their tiny nation could be ready to erupt.

34.   A brokerage is the only source to consolidate IRA assets where investment choices are unlimited.

35.   A number of agencies are beginning to recognize that airlines and other suppliers are not the only source of income for travel agents.

36.   A stone fireplace in the living room was the only source of heat.

37.   A woman who had accompanied Benjamin over the mountains, Henny Gurland, seems to have been the only source for declaring his death a suicide.

38.   Accidentally breaking a tooth is not the only source of dental problems for pets.

39.   After the explosion the only source of electricity for the command module, Odyssey, was its batteries.

40.   All the reactors are the main source of employment, and the only source of heat, for the towns where they are located.