Before I ask I'd like to say how much I admire Chinese culture and art. Hence I always dig in antique shops for something from China. A few years ago I bought these beautiful twin paintings (not prints) and they look at least 100 years old, signed by the same artist. Sadly I cannot connect these painting with an artist and I've done some research. My last bit of hope lies in you, would you be able to help me to translate signature and seal. I will be very very grateful.
well the signature is (read top to bottom):
then, the seal is the same (read right to left)
if you goggle, there's a 日本篆刻家協会会報,
in page 10, there's the same seal, with info:
he's a japanese seal craving artist (篆刻家); so, i guess that this seal "李徯" was made by him. further, it's reasonable guess that the painting is "made-by-japanese".
if you need further info, i would suggest you post the pictures in japanese language stack exchange :)