Great company, there was mention of the sinclair hotels.

Have a few addresses and open dates.
Springfield MO. 07-16-1928- sold to greyhound in 1936
Columbia MO. 01-16-1929 - 1406 OLD HY. 40 WEST
Rolla MO. -1929- HY. US 66 and 63
Pond MO. -1929- 1835 Manchester Rd.

Two others built in Miami and Tulsa OK.- Have found stamped post card from Columbia dated April 1930 and it states that sender had just got there after overseeing grounds planting at the two hotels in OK.

The MO. 1934 Sinclair map has these locations highlighted and the only map year I have found to date with them.

Sinclair not really my thing but I have a interest as they bought out Pierce. Knew Wes would keep this one fun.

*Wanted Pierce Pennant Petroleum*