Here's how the PWRR is subdivided and the eras operated in:

A - Philadelphia Region -
Total area covered by the PWRR

1- Allentown Division - This division is based on the PRR era
a- Philadelphia 1 - Subdivision
b- Allentown Subdivision
c- New Jersey Subdivision

2- Harrisburg Division -
This division is based on the Conrail era
a- Philadelphia 2 - Subdivision - Conrail era
b- Reading Subdivision - Conrail era
c - Anthracite Subdivision - Conrail era
d - Harrisburg Subdivision - Conrail era

3- East Broad Top RR Division -
The EBT is modeled after the tourist version and is part of the Conrail era

                                                  Philosophy -- ONE LAYOUT - TWO ERAS

I love all kinds of trains. I grew up in the 1940's and 50's which is known in model railroad circles as the
"Steam to Diesel Era". As far as model trains are concerned, it was also the American Flyer era. A 4904T set
got me started in 1952. As I matured, the pull towards HO was strong and I actually had an HO layout going in
the late 50's. I had hung on to my AF, and after a tenure in the Army, I went back to S scale for good. Since AF
modeled Prototypes from the Steam to Diesel era, most of the S scale equipment available from American
Models and S Helper reflected the same era. Therefore most of my S scale is from that era. AM has made
some of the more modern prototypes and S Scale America has been making several modern era cars and
I've slowly been building up my roster with their models. The result is quite a mixture of prototypes that
cover a large spread of time. But, I must admit that some strange consists result at times. As I said, my love
for trains in general manifested itself in the trains that I accumulated over the years

Lately I have finally begun a system of operation. There are several reasons for the delay. I like doing the
scenery most of all and that includes scratch building many structures. When I designed the layout I didn't
have operations in mind and have had to rework several areas to incorporate an operations scheme. I  
looked at the eclectic mix of equipment and wondered how to merge it all together.  Then I came up with a
solution that might solve the problem of mixed eras. I already had two main divisions of the layout. Using
Philadelphia as the hub, one loop went west to Harrisburg and one loop went north to Allentown. Each loop
had a freight yard. The two divisions were on different levels and didn't connect with each other. One loop
was converted to DCC and the other still used DC. It was like having two layouts in one. Therefore, I decided
that each loop would cover a different era. The NJ to Philadelphia to Allentown loop will emulate the
Pennsylvania Railroad during the Steam to Diesel era while the Philadelphia to Harrisburg loop will emulate
the Conrail era. The Sn3 East Broad Top runs alongside the Harrisburg divisions and since I operate it as it
exists as a restored tourist railroad, it fits right in with the Conrail era.

Since I have fewer pieces of modern equipment, I thought that I could use some of the later PRR and other
roads that made up Conrail by operating in the Early Conrail Era. That should give me the necessary amount
of cars and engines to operate.

After trying some different operations schemes, I've decided to go with JMRI (Java Model Railroad Interface)
The DCC portion of the layout will be run with JMRI residing on a Raspberry Pi 3. The JMRI system of
operation with generated switch lists will by utilized.