Strange looking craft and possible lost time

I’m not sure on the exact date but it was when I was 6 or 7 which that would make it around 1967 or 1968 and the month/day/time I’m not sure of either.  What I am sure of is myself, brother, mother and father were standing in our front yard in Mt Washington, Maryland, and we saw this craft slowly drifting across in front of us about 300 feet away and 300 feet up.  It was not an airplane, helicopter, glider, balloon, inflated object (hoax) or anything we have ever seen.  It reminded me now of the Jefferson airplane blimp if you ever seen that on their album or poster.  It sort of looked like a cross between a box kite and balloon but was not either of those at all. 
It was close enough that I remember seeing the operator of this craft staring at us, as it drifted by.  Time seemed to stand still and it also seemed as though we were under the control of the operator of this craft--very, very strange indeed.  I think about this often and would love some answers. 
I have other experiences which have happened later on in my life which really make it seem as though I’ve been abducted several times.  I honestly don’t think these experiences were dreams and probably should have my brain tapped into to see.
Witness indicates that date of incident is approximate.  PD