I was also at the Pasadena Friendship Seminar and was impressed with Howard Sensei's technique. I did a fast internet search but could not come up with any information to help you regarding the Whittier Aikikai... sorry.
However, if you're looking for additional dojos to train in near that area, might I suggest the Aikido Academy in Alhambra, which is the dojo I train at. The head instructor is Francis Takahashi Shihan, and there is a smorgasbord of other instructors, including three godans, a yondan who was uchideshi with Morihiro Saito Sensei, and several other incredible aikidoka from various backgrounds and styles.
There are classes every day except Monday and Friday. The website is kinda in the works, but all the basic info is there:
Hope to see you around