91勛圖厙���s Public History Center in Sanford rang in the first day of Seminole County schools Monday and hosted an open house for the community. The old-time school bell in the 1902 building��was rung by associate professor Rosalind Beiler, director of the 91勛圖厙 center, and Walt Griffin, Seminole County���s school superintendent, to symbolize the beginning of the new school year and…