Lit House Signs

I'm not sure of the history on this one, but at one point it seems that every Fraternity and Sorority had a lit sign on their house.  It seems that most of these are gone, hopefully still around but someplace safe.  Do you know the history of your House lit sign?  I think OPiO had one as well but I don't have a clear photo. 

Here's what I've found:

Zeta, 1970 rush party

Ago sign, 1961

Ago in 1934 at 61 Elm Street

Alpha Sigma Nu (became Alpha Delta) at 29 Elm Street in 1927

Alpha Delta at 29 Elm Street in 1934

The original AXP house (which burned down in 1975)

Theta Chi on Fall Island, 1953

DTT

Omega: Omega's was hand crafted around 1964, refurbished 2011 and re-hung in 2015

Omega in 1979

Omega in 2015

BT 1961

Theta Xi 1961

Clio (PhiK) at 18 Elm in 1934

Theta Xi 1972

Sigma Delta 1990

Zeta Nu, 1968