I have an original Cat HT4 Traxcavator : Installation and Operation Instructions manual for sale. Serial numbers HT4-101 to HT4-2680, 35C1-up, form 30715-3. Both front and rear cover have some storage and smudge marks on them. The pages inside are in very good to excellent condition. The booklet is solid and not falling apart. Originally purchased from Peterson Cat in San Leandro, Ca. Has their sticker on the back of the booklet. Probably dates from the late 50's or so.

I sent you a pm I am interested in the manual.