Once again thank your for the suggestions they give me some hope.

For info as suggested this morning (29 degrees F outside) I tried holding the gas peddle to the floor instead of disconnecting the fuel pump fuse to no avail. As soon as I disconnected the fuel pump fuse it started right up and stalled as it ran out of gas. Then I reconnected it and the car started right up. For some reason I have to cycle the power to the fuel pump relay, however, at least I can start the car when I want.

I tried disconnecting the hose leading from the intake manifold to the EVAP valve just in case the valve failed open and negative pressure was drawing gas from the Canister when the engine cooled down. The hose to the EVAP held a vacuum and I could see nor smell any gas in the hose. Next …

I purchased an inexpensive fuel pressure gauge and fitting last night. Following the Alldata - testing and inspection procedure - for a 96 Volvo Turbo I found with the pump running the system generates a steady ~45 psi. I am not certain if gauge is accurate but assume this is ok for my purpose. Pressure increased when I clamped the return line on the regulator and pressure fell when I applied a vacuum to the pressure regulator. However, the pressure did not fall 1:1 as suggested by Alldata but I assume who knows how accurate my gauges are so I am assuming the readings are ok for evaluating my starting problem. I then checked for residual pressure and the system held at 40 psi for over 30 minutes. As a result it began to look like leaking injectors might not be the problem.

In any case I wanted to be sure so I dug up an old ACTRO fuel injector tester I had and installed it along with while the pressure gauge. This time with fuel pump relay installed and cycling the ignition on/off 3 times a pressure of ~ 42 psi was generated and held steady. I assume the system generates a little more pressure when the pump is continuously running. Testing each injector in turn using the single pulse mode (for plugged and leaking injectors) I found that for all 5 injectors the system pressure dropped from the base 42 psi to ~15 psi and then slowly increased to 20 psi. All injectors showed essentially the same characteristic. According to the manual a leaking injector should shown more pressure drop than the others. Of course I suppose all injectors might be leaking. However, this test seems to imply that the injectors are ok.

To complicate matters last evening I put injector cleaning solution in the gas and drove around a bit. Although it did not have any impact on starting this morning maybe it is beginning to work. Who knows. As a desperate measure I also removed the engine control module sprayed the connections with contact cleaner and re-installed it. Just in case a poor connection is playing havoc with the signal to the injectors.

I guess I will not know if any of what I have done will help until I try and start the car tomorrow morning.

Any other suggestions would be appreciated.

Just in case anyone is interested in the testing process and logic (or not) I followed is outlined below in more detail:

Following the Alldata - testing and inspection procedure - for a 96 Volvo Turbo:
Checked vacuum hose to pressure regulator first - ok
Connected pressure gauge and started fuel pump - first jumping relay base terminals 1 & 2
Pressure measured ~ 45 (not certain if gauge is accurate) but assume this is ok for my purpose.
Clamped the return line on the regulator and the pressure rose immediately.
Connected vacuum pump to regulator and pressure fell. Not quite 1:1 as per Alldata but I assume is ok again for my starting problem diagnosis.
Disconnecting vacuum and system returned to normal pressure.
Checked residual pressure and the system held at 40 psi for over 30 minutes.

Tested fuel injectors using an ACTRON fuel injector tester with the pressure gauge connected and found:

With fuel pump relay installed and cycling the ignition on / off 3 times a pressure of 42 psi was generated and held steady. This is less than the system pressure with the fuel pump running, however, it held fast so I assume it is ok for my evaluating my starting problem.
Using the single pulse mode on each injector in turn (pressurizing the system in-between each injector) found that for all 5 injectors the system pressure dropped from the base 42 psi to ~15 psi and then slowly increased settling at 20 psi. All injectors showed essentially the same characteristic.
Using the multiple pulse mode (used to determine if injectors are sticky or sluggish) as above found that for all 5 injectors the system pressure dropped from the base 42 psi to ~ 24 psi and then slowly increased settling at 30 psi. Once again all injectors showed essentially the same characteristic.
According to the manual the single pulse mode should have identified a leaking injector I.e. the leaking injector should have shown more pressure drop than the others.
My testing implies the injectors are ok, not clogged, sticky, sluggish or leaking. Of course this is when they are warm.
Of course since all the readings are the same all injectors might be leaking yet the car runs so well other than upon a very cold start up I cannot believe this to be true.