Key:

A = Stockyard, animal watering facility

B = Bridge  

          Bb=bascule |  Bd=drawbridge-unk  |  Bl=lift bridge  |  Bt=trestle |  Bs=swing  |  Bh=Howe truss

C = Coal or fuel station

          Cc=concrete dock  |  Cd=diesel fuel/pad  |  Cs=steel dock  |  Cm=straddle main track  |  Cnnn=100 ton

D = Depot

          D=staffed during day  |  Dn=staffed day and night

E = Engine house (not roundhouse)

          Enn=capacity in locomotives

F = Freight house (independent of station)

G = Register station (per timetable)

H = Hotel or resort (see notes)

I = Interlocking

          Ia=automatic  |  e=electric  |  Ig=ground level control  |  Im=mechanical/strong arm  |  Ip=pneumatic

J = Junction

          Js=with switchtender  |  J^=Control point

K = Block station

          K^=remote controlled from another station (see notes)

L = Elevator

M = Mine Location

          Mc=copper  |  Mi=iron  |  Ms=stamp mill  |  Mx=smelter  |  Mz=coal

N = Industry (major facility with rail service)

          Na=auto plant  |  Nm=other manufacturing  |  Np=power plant

O = Other

P = Passing siding (normally clear, used in train passing operations per timetable)

          Pnnn=car length in 44' cars

Q = Railroad shops

          Qc=car shops  |  Ql=major locomotive

R = Roundhouse

          Rnn=# of stalls  |  2R=two seperate roundhouses

S = Scale

T = Tower (interlocking)

          Tc=street gate or warning control only  |  Ty=yardmaster tower

U = 

V = Wye (to turn locomotives)

W = Water

          Wp=with standpipes  |  Ws=sand available  |  Wt=track pan(s)

X = Crossing (railroads)

     Xg=with gate  |  Ws=with switchtender  |  Wt=with target or ball

Y = Yard

Z = Crossover between main tracks

          Z^=interlocked control point, controlled by dispatcher or other (see notes)